Supersedes All Previous Catalogs Catalog No ... - TradeMotion.com

Supersedes All Previous Catalogs 

Catalog No. P4510653 $3.95 

8028 10415 ©2004, DaimlerChrysler Motors Company, LLC. Mopar is a registered trademark of DaimlerChrysler Motors Company, LLC. All rights reserved.

J.J. Yeley pitched his No. 20 Mopar sprint car to 

14 victories in 2003 on his way to breaking the 

all-time USAC record for wins in a season, 

which was originally set by A.J. Foyt in 1961. 

Photo: Dennis Krieger 

MOPAR PERFORMANCE. OCTANE IN YOUR VEINS. 

There’s a good reason you see the familiar blue Mopar logo on racetracks and drag strips around the country. 

At Mopar, we believe in putting our reputation on the line every week. This Essentials Guide has all the latest 

in racing innovation for sprints, midgets, late models, NHRA drag racing, Viper racing and SCCA ProRally. 

Sturdy parts race-proven by drivers like J.J. Yeley, Dave Steele, Tony Stewart, Darrell Alderman, Doug 

Shepherd and Shaun Carlson. You can also find these parts on the Web at mopar.com and keep tabs as 

Team Mopar writes a new chapter in its storied motorsports history at moparspeed.com. 

Mopar Performance is dedicated to providing the best parts for the true racer, whether an avid weekend 

warrior or a greasy-fingered but buttoned-down professional. 

Cover: 

The 2003 Mopar Mile-High Nationals featured an appearance by the sparkling special 

“Bling bling” Mopar Funny Car of Schumacher Racing. The nitro-powered Hemi in this Dodge 

Stratus reminded everyone at Bandimere Speedway why they call it “Thunder Mountain.” 

Photo: Bruce Biegler 

2 

*Not legal for sale on pollution-controlled vehicles 

or vehicles registered for highway use. 



Dave Steele celebrates his 

USAC Midget victory at 

Nazareth Speedway. 

Photo: Connie LaBounty 

Go to mopar.com for complete product listings. 

3

Geofredo “Fonzie” Alfonso puts the finishing touches on the No. 1 Mopar Dodge 

Ram driven by Ted Musgrave in the NASCAR Craftsman Truck Series. Fonzie is the 

driver comfort specialist and over-the-wall tire carrier for the No. 1 truck. 

Photo: camerasinaction 

TABLE OF CONTENTS 

SPRINT CAR / DIRT LATE MODEL ........................ 6 

LATE MODEL ........................................... 16 

MIDGET................................................. 26 

NASCAR NEXTEL CUP / CRAFTSMAN TRUCK .......... 32 

DRAG RACE............................................. 34 

HIGH-PERFORMANCE “A” ENGINE ......................42 

VIPER .................................................. 48 

PERFORMANCE BOOKS ................................. 55 

APPLICATION CHARTS ................................. 56 

4 

MOPAR PERFORMANCE WARRANTY 

NOTICE 

Federal and many state laws prohibit the removal, modification or 

rendering inoperative of any part or element of design affecting 

emissions or safety on motor vehicles used for transporting persons or 

property on a public street or highway. Violation may result in a fine of 

up to $27,500 per vehicle. Mechanical and/or electronic performance 

parts listed in this catalog cannot be used on vehicles used on public 

streets or highways. These parts may be used only on vehicles used 

solely in sanctioned off-highway events. No other applications are 

intended or implied. Those parts that have been granted an exemption 

by the California Air Resources Board (CARB) or meet the EPA 

requirements of memorandum 1A are legal for highway use in 

California, New York and Massachusetts and are noted as such. 

NO PARTS WARRANTY 

Mopar Performance parts are sold “as is” unless otherwise 

noted. This means that parts sold by Mopar Performance carry 

no warranty whatsoever. Implied warranties, such as warranties 

of merchantability, are excluded. (An implied warranty of 

merchantability means that the part is reasonably fit for the 

general purpose for which it was sold). The entire risk as to 

quality and performance of such parts is with the buyer. Should 

such parts prove defective following their purchase, the buyer 

and not the manufacturer, distributor or retailer, assumes the 

entire cost of all necessary servicing or repair. 

Dodge, Chrysler and Jeep® vehicle and parts warranties are voided if 

the vehicle or parts are used for competition. The addition of 

performance parts does not by itself void a vehicle’s warranty. However, 

added performance parts (parts not originally supplied on the vehicle 

from the factory) are not covered by the vehicle’s warranty, and any 

failure that they may cause is also not covered by the vehicle’s warranty. 

MOPAR PERFORMANCE CRATE ENGINE 90-DAY 

LIMITED WARRANTY 

Mopar Performance Crate Engine Assemblies not used in competition 

are warranted for “parts only,” AS DELIVERED against defects in 

materials or workmanship for 90 days from the date of purchase. The 

following parts, if defective, will be replaced on an exchange basis for 

90 days: cylinder blocks and all internal parts; cylinder head assemblies; 

intake manifold; core plugs, valve covers; oil pan; timing gear; water 

pump; gaskets and seals. See your dealer for a copy of the warranty. 

EMISSIONS STATEMENT 

Federal law requires emissions parts on new vehicles to be warranted 

for at least two years or 24,000 miles, whichever comes first. Federal 

and many state laws also prohibit the removal, modification or 

rendering inoperative any part that affects emissions or safety on motor 

vehicles used on public streets or highways. 

Many Mopar Performance parts are designated for track use or off-road 

use only. Installation of certain components may bring the vehicle out of 

compliance with safety and/or emissions standards. Mopar 

recommends that vehicles with parts designated in this fashion not be 

operated on public roads. Mopar Performance customers are 

responsible for complying with applicable state and local environmental 

regulations. 

Additionally, certain performance parts may affect the emissions 

characteristics of the vehicle. If you install them on the vehicle, and your 

vehicle consequently fails a required state or local I/M (inspection and 

maintenance) emissions test, including any test required to maintain or 

renew your vehicle’s registration, or if your vehicle is subject to an 

emissions recall, DaimlerChrysler may not be required to repair your 

vehicle under the emissions performance warranty, and you may be 

required to remove those parts at your own expense in order to obtain 

repairs necessary to pass the I/M test or to perform the recall. 

NOTE — CALIFORNIA ONLY 

The emissions laws and regulations of the state of California apply to 

all non-racing vehicles operated in California. Consequently, those parts 

marked in this catalog with an asterisk and appropriately marked on 

their packaging may legally be used in California only on a racing vehicle 

that will never be operated on public roads. 

PARTS ORDERING AND INQUIRIES 

The parts in this catalog may be ordered from authorized Chrysler, Jeep 

and Dodge dealerships or the speed shops carrying the Mopar 

Performance line of products. When a part ordered has been 

superseded, the replacing part will be shipped automatically. The price 

of the replacing part may differ from the ordered part. 

All product illustrations and specifications are based upon current information at the time of publication approval. Although descriptions are believed correct, complete accuracy 

cannot be guaranteed. DaimlerChrysler reserves the right to make changes at any time, without notice or obligation, to the information contained on this printed document, 

including and without limitation to prices, incentive programs, specifications, equipment, colors, materials, and to change or discontinue models. 

P4510654 P4510652 P4510653 

Life on the street moves at warp speed. There’s no time to lose. When you want parts 

for your ride, you want them now. At mopar.com you can see all of the Muscle, Street, 

and Speed performance parts that Mopar Performance offers.

SPRINT CAR/DIRT LATE MODEL 

Mopar Performance offers awesome fire-breathing V8s and a truckload of great 

parts for your sprint car. Discover what champion drivers, teams and engine 

builders already know, and stand on the gas of a Mopar! Check out the new crate 

engines from professional engine builders or pick up our engine build-up manual 

and do it yourself. 

SPRINT CAR/DIRT LATE MODEL 

P5007520 

Mopar Sprint Car Engine Build-Up Manual 

NEW! 410 SPRINT CAR ENGINE 

Circle track race engine designed for use in non-winged sprint 

cars in USAC and SCRA racing series. This complete and dyno’ed 

aluminum “A” engine includes injector stacks, MSD magneto, 

ignition box and wires, oil tank and lines, front engine mounts 

and W9 cylinder heads. 

J.J. Yeley stretches the unique oval at 

Nazareth Speedway with the supreme 

power of his 410 c.i. Mopar. 

Photo: Russ LaBounty 

Danny Lasoski pushed his World of 

Outlaws entry to a series-leading 

28 Fast Times (qualifying) in 2003. 


SPECIFICATIONS: 

Horsepower: 800 horsepower 

Torque: 630 ft.-lbs. of torque 

Max. Recommended rpm: 8200 rpm 

Displacement: 410 c.i. 

Bore: 4.129" 

Stroke: 3.800" 

Compression Ratio: 14:1 

Connecting Rods: Carrillo 6.00" 

Crankshaft: Sonny Bryant 

Cylinder Heads: Chapman W9 

Combustion Chamber Size: 45 cc 

Valve Angle: 13° 

Intake Manifold: Engler Injector 

Valve Sizes: 2.180" intake / 1.600" exhaust 

Rocker Arms / Ratios: T&D / 1.7 1.6 

Camshaft: Crane roller with 50 mm roller bearings 

Lift: .750" 

Duration at .050": 266 intake / 272 exhaust 

Valve Spring / Retainers: 1.625 diameter 240 lbs. at 2.100" 

installed height with titanium retainers 

Valve Covers: Fabricated aluminum 

Block: Aluminum Mopar with 9.100" deck 

Pistons: C.P. 

Oil Pump: Barnes 4 Stage 

Oil Pan: Aluminum 

Water Pump: KSE 

Fuel: Methanol 

Maximum rpm: 8500 rpm 

*P5007962 410 Sprint Car Engine 

NOTE: Please allow 4 to 6 weeks for delivery. This engine is made to 

order by the supplier. 

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NEW! 410 OUTLAW RACING ENGINE 

Circle track race engine designed for use in winged sprint cars in World of 

Outlaws and other 410 racing series. This complete and dyno’ed aluminum 

“A” engine includes injector stacks, MSD magneto, ignition box and wires, 

oil tank and lines, front engine mounts and W9 RP cylinder heads. 


Horsepower: 840 horsepower 

Torque: 670 ft.-lbs. of torque 



Bore: 4.129" 





Cylinder Heads: Chapman W9 Raised Port 






Camshaft: Crane roller with 50 mm roller bearings 

Lift: .750" 


Valve Spring / Retainers: 1.625" diameter 240 lbs. at 2.100" 

installed height with titanium retainers 


Block: Aluminum Mopar with 9.100" deck 

Pistons: C.P. 






*P5007963 410 Outlaw Engine 

NOTE: Please allow 4 to 6 weeks for delivery. 

This engine is made to order by the supplier. 

The 25-year-old Daryn Pittman muscled his Mopar-powered winged sprint 

car to four World of Outlaws victories and a career-best, fourth-place 

finish in 2003. Pittman also won the biggest race of his career, the 

$100,000-to-win Historical Big One at Eldora Speedway, in August. 


NEW! SILVER CROWN ENGINE 

Circle track race engine designed for use in the USAC Silver Crown series and Western States Sprints. This complete and dyno’ed 

R3 iron block engine includes injector stacks, MSD magneto, ignition box, wires, and harnesses, front hex drive for starter, five-stage 

belt driven oil pump with fuel pump mount, front engine mounts, race water pump with billet/pulleys and W9 cylinder heads. 


Horsepower: 740 horsepower at 7200 rpm 

Torque: 580 ft.-lbs. of torque at 5800 rpm 



Bore: 4.129" 





Cylinder Heads: W9 



Intake Manifold: Engler Injection 



Camshaft: Crane 50 mm roller camshaft with roller bearings 

Lift: .745" 


Valve Spring / Retainers: 1.625" diameter dual springs / 240 lbs. 

at 2.100" installed height with titanium retainers 


Block: R3 Race Block 

Pistons: C.P. 



*P5007964 Silver Crown Engine 

NOTE: Please allow 4 to 6 weeks for delivery. 

This engine is made to order by the supplier. 

Tracy Hines likes those long wheelbase USAC Silver Crown Mopar cars. Hines also drove an Ultra 

Motorsports NASCAR Craftsman Truck Series entry to impressive finishes in several 2003 events. 

Photo: John Mahoney 

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“A” ENGINE ALUMINUM 

RACE BLOCKS 

Designed and built for the serious Sprint Car and Dirt late model, this 

Mopar Performance “A” aluminum race block showcases the latest 

in technology. Knowing the racer’s concern for weight and overall 

strength, this block was engineered using finite element analysis 

to optimize the design for weight savings of over 25 lbs. from the 

previous version. The following features set the Mopar block ahead 

of the competition: 

• 6-bolt head design for superior gasket sealing and reliability at 

higher compression ratios (a 4-bolt head can be installed) 

• Full skirted “H” block design for the required strength and rigidity 

• Cross-bolted main caps for added strength and improved rigidity 

• Ductile iron dry cylinder liners 

• High-strength A1 studs, bolts, and attaching hardware 

• “A” engine high cam location for longer strokes and reduced windage 

• 50 mm roller bearing cam design for reduced friction 

(Requires bearing set P4876707) 

• 48° tappet angle for close to ideal valve train geometry 

• Approximate weight — 95 lbs. to 100 lbs. 

*P5007580 “A” Engine Aluminum Race Block — 

9.000" deck height, ribbed 





REPLACEMENT SLEEVES 

*P4532866 Replacement Sleeve — 4.209" OD, 3.990" ID, 

5.570" long (fits 9.00" blocks) 


5.545" long (fits 9.00" and 9.100" blocks) 


6.000" long (fits 9.560" blocks) 

NOTE: For complete Engine Block listings, see the Race Block 

Application Chart on p. 56. 

NEW! BILLET SPRINT CAR CRANKSHAFT 

This lightweight 4340 billet steel sprint car crank features a 3.8" stroke, 

2.00" rod journals, 340 mains and a generic 6-bolt rear flange. 

*P5007903 Billet Sprint Car Crank — 3.8" stroke 

“A” ENGINE ALUMINUM SPRINT CAR 

GEAR DRIVE AND COVER ASSEMBLY 

Gear drive assembly for Sprint car applications for front mount oil and 

water pumps. Kit includes the following: crank drive gear, cam gear, 

idler gear, front cover, water pump drive hub and adapter, oil pump 

drive and adapter and mounting hardware. 

P5249988 

Aluminum Gear Drive Package 

RACE ROLLER UGL CAMSHAFTS 

The 48° tappet “R” blocks (R1, R2, R3, R4) and the 48° tappet aluminum 

blocks require special cams. These UGL (unground lobe) cams can be 

provided to grinders to enable them to grind their specific profiles to 

create a finished cam. Cannot be used in engine as is. 

*P5007134 Lightweight (hollow) UGL Cam for roller tappets — 

use with 50 mm roller bearings (P4876707) 

NOTE: For a detailed list of UGL Camshafts, see p. 57. 

“A” ENGINE CAMSHAFT BEARINGS 

Includes complete engine set. 

P4876707 

“A” Engine Cam Bearings — 48°, 50 mm roller 

bearing application 

Steve Francis piloted one of the only Mopar entries in the premier 

Xtreme DirtCar Series to a solid fourth-place finish while compiling 

24 top-10 finishes. Francis also had success in several other late 

model dirt racing series in 2003. 

Photo: Mike Katterhenry 

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NEW! W9 

RAISED PORT 

ALUMINUM 

CYLINDER HEADS 

Partially machined W9 Cylinder Heads 

with raised intake and exhaust ports. 

Recommended for use in Sprint Cars and Midgets: 

• High-strength, lightweight A356 aluminum alloy casting 

• Ports raised significantly higher than standard W9 cylinder heads 

• Machined deck, intake surface, head bolts and valve cover rail; 

ports are cast small to allow for flexibility in porting (requires porting) 

• Chamber is cast filled in to allow very small machined chamber 

(requires machining) 

• Requires machining for valve guides, spark plugs, intake screws, 

porting, chamber, valve spring pockets, rocker stands, and injectors 

• Designed for 13° valve angle 

• For use on 48° V8 and 4-cylinder blocks 

• Recommended valve length: 6.040" intake and 6.060" exhaust 

• 6-bolt head attachment design 

• Accepts 5-bolt Mopar valve cover and gasket 

• Recommended for use with T&D rocker arms with .750" offset (custom order) 

*P5007904 W9 Raised Port Cylinder Head 

*P5007952 W9 Raised Port Cylinder Head — late model 

NOTE: For a detailed list of Cylinder Heads and their applications, see p. 58. 

W7/W8/W9 RACING 

GASKETS 

Originally designed and 

engineered by Mopar Performance. 

The latest in 4-Armor design 

composite gasket technology. 

Designed to accommodate both 4- and 6-bolt head attachment systems. 

Sold as an engine set. 

P4876665 

P4876830 

P5007741 

P4876666 

Head Gasket Set — up to 4.180" bore 



Lock Wire Head Gasket Set — up to 4.180" bore 

(requires groove machining in cylinder head) 

HEAD STUD KITS 

High-strength studs and nuts 

(contains studs, nuts and washers). 

P4876083 

P5007912 

W9 Head Stud Kit 

(for use with “R” block) 

NEW! W9 Head Stud 

Kit (for use with “RP” 

cylinder head) 

J.J. Yeley in a typical 2003 snapshot: leading 

the rest of the pack. The No. 69 team, with 

driver Tracy Hines, got smart and switched to 

Mopar power late in the season. 

Photo: Russ LaBounty 

W9 ALUMINUM CYLINDER HEADS* 

Designed with the professional racer in mind, the W9 aluminum cylinder 

head incorporates the latest in “Paperless Design Technology” to give 

racers the leading edge. These W9 heads feature: 


• Thick deck to permit small chambers for maximum compression ratio 

• 6-bolt head attachment design 

for sealing integrity 

• Raised intake and exhaust ports 

for maximum performance 

• 15° valve angle, with additional 

material to permit “rolling” the head 

(except P5007861 which is 13°) 

• Same length as block to permit ease of 

installation with engine plates 

• Machined for 5.540" intake and 5.560" exhaust valves 

• Accepts 5-bolt Mopar valve cover and gasket 


“PRO” RACE ROCKER ARM SYSTEMS 

• Complete system, including shafts and bolts 

• Designed for high rpm, high load racing applications 

• Roller tip 

• Requires hollow pushrods for oiling 

• Needle bearing center pivot 

• Made of high-strength aluminum 

*P5007470 W9 Rocker Arm 

System – .550" offset 

(1 head only) 

RACE V8 SINGLE PLANE INTAKE 

MANIFOLDS — 4-BBL 

*P4532598 Std. 4-bbl, aluminum, single plane, large rectangle port, 

W7/W8/W9 heads – 9.000" deck 

*P4876162 Std. 4-bbl, aluminum, single plane, rectangle port, 

W7/W8/W9 heads – 9.560" deck 

NOTE: See the Intake Manifold Application chart on p. 58. 

INTAKE MANIFOLD GASKET SETS 

Custom fit intake gaskets for use on your Mopar cylinder heads. Kits 

come complete to service 1 engine set (includes gaskets, end seals, 

o-rings, and distributor seal where applicable). 

P5007153 

P5007154 

P5007155 

P5007156 

W9 Intake Manifold Gasket Set — 0.030" thick 




ALUMINUM “A” ENGINE OIL PAN GASKETS 

P5007631 

Aluminum Oil Pan Gaskets 

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CLIMB IN, HANG ON 

OPEN-WHEEL CIRCLE TRACK — V8 

Armed with the edgy new Mopar look, the Team Mopar sprints 

and midgets contingent captured attention (and victories) 

throughout 2003. Chief among them was J.J. Yeley, who set 

the record for most USAC wins in a season, eclipsing the 

previous record of 19 held by the legendary other initial-guy, 

A.J. Foyt. Yeley captured the USAC National Sprint Car season 

championship driving the No. 20 Mopar car owned by 2002 

NASCAR Winston Cup Champion Tony Stewart, who held 

ownership in several other Mopar USAC entries. Tracy Hines, 

Jay Drake and Cory Kruseman also racked up numerous wins 

and fast times using Stanton Racing Mopar power. Dave 

Steele drove Mopar to victory in three USAC Midget events. 

In the World of Outlaws, Danny “The Dude” Lasoski switched 

to Paul Kistler-built Mopar power for 2003 and the results 

were spectacular. Lasoski posted the Fast Time in qualifying 

an astounding 28 times — more than three times as many as 

the next in line (Steve Kinser had eight). And backed by that 

reliable Mopar power and Tony Stewart Motorsports, he was 

locked in a battle for first with Kinser throughout the entire 

year as the two of them fought it out for WoO supremacy. 

Daryn Pittman also figured into the WoO equation, thanks to 

the Mopar power under his front wing; Pittman finished the 

season fourth in points. 

Mopar supplied the power for several additional 

successful V8 dirt-trackers in 2003, and you 

can choose some of the same parts 

that took them to Victory Lane 

in these pages. 

Cory Kruseman pops a wheelie with 

his powerful Mopar Sprint car. 

Photo: Al Consoli 

Danny Lasoski became quite comfortable with the 

potent and reliable Mopar power in his winged sprint 

car, gunning his ride to second-place in championship 

points in the rigorous World of Outlaws series. 


Tony Stewart proudly wrenches 

on the No. 20 Sprint car he 

owned for J.J. Yeley in 2003. 

Photo: Jan Dunlap 

14 

Good things come in pairs. 

Tracy Hines dominated the first 

leg of the Mopar Twin 25’s at 

Irwindale in April 2003. 

15

LATE 

MODEL 

Rub fenders with Mopar Performance! Take a look at the awesome new 

crate engines and detailed books offered by Mopar Performance and try 

to tell us that we haven’t got our developmental fingers on the pulse of 

North American fendered racing. 

LATE MODEL OVAL TRACK 

ENGINE BUILD-UP MANUAL 

P5007450 

Mopar Late Model Oval Track 

Engine Build-Up Manual 

MOPAR 358 OVAL 

TRACK ENGINE 

BUILD-UP MANUAL 

P5007373 

MOPAR OVAL TRACK 

MODIFICATIONS — 

3RD EDITION 

P5249959 

Mopar 358 Oval Track 

Engine Build-Up Manual 

Mopar Oval Track 

Modifications — 3rd Edition 

Mark McFarland charged his way to the 2003 championship 

of the NASCAR Dodge Weekly Series in his sharp No. 17 Dodge Intrepid. 

He picked up 16 wins and 18 top-five finishes in 18 starts at Old Dominion Speedway 

in Manassas, Va. (Inset) McFarland talks with car owner Jim Dean (wearing headset). 

Photos: Jason Cooke 

NEW! 400 HORSEPOWER RACING ENGINE 

Circle track crate engine designed for use in the NASCAR / Dodge Weekly 

Racing Series in Modified, and Late Model applications. Dyno tested and 

factory sealed to ensure consistent output. This factory-sealed crate engine 

includes the water pump, damper, water neck, oval track oil pan, timing 

chain tensioner, and aluminum valve covers. 




Maximum Recommended rpm: 5800 rpm 

Displacement: 363.5 c.i. 

Bore: 4.020" 

Stroke: 3.58" 


Connecting Rods: Length — 6.123", forged steel with 

high-performance rod bolts 

Crankshaft: Cast 

Cylinder Heads: Aluminum W9 (P5007179AB) 



Intake Manifold: Aluminum single plane (P4876162) 

Valve Sizes: 2.15" intake / 1.60" exhaust (stainless) 

Rocker Arms: 1.6:1 double roller pro race – T&D 

Camshaft: Hydraulic roller tappet 

Lift: .501" intake / .513" exhaust 

Duration at .050" 230 intake / 234 exhaust 

Valve Spring/Retainers: High-performance (P4876064) and 

chrome-moly retainer (P4452033) 

Valve Covers: Die cast aluminum with breather 

Block: Late 360 – Reman (thermal cycled) 

Pistons: Flat-top with coated skirt and valve relief 

Oil Pump: Melling high-volume 

Oil Pan / Pickup: Race with kick-out (8 quart) 

Water Pump: Aluminum with 6 blade – normal rotation 

Fuel Pump Eccentric: High-performance moly coated 

Fuel: 92 octane gasoline 

*P5007958 400 Horsepower Racing Engine † 

16 Go to mopar.com for complete product listings. 

*Not legal for sale on pollution-controlled vehicles or vehicles registered for highway use. 

† Late availability. 

17

NEW! 355 HORSEPOWER RACING ENGINE 

Circle track crate engine designed for use in the NASCAR / Dodge Weekly 

Racing Series in Modified, Late Model, and Street Stock applications. Dyno 

tested and factory sealed to ensure consistent output. This factory-sealed 

crate engine includes the water pump, damper, ignition system with 

distributor, oval track oil pan, timing chain tensioner, and aluminum 

valve covers. 



Torque: 405 ft.-lbs of torque at 3800 rpm 

Maximum Recommended rpm: 5800 rpm 

Displacement: 363.5 c.i. 

Bore: 4.020" 

Stroke: 3.58" 


Connecting Rods: Length is 6.123" — forged steel with 

high-performance rod bolts 

Crankshaft: Cast steel 

Cylinder Heads: Aluminum “Late 360" (P4876624) 



Intake Manifold: Aluminum dual plane (P5007381) 

Valve Sizes: 1.92" intake / 1.625" exhaust (stainless) 

Rocker Arms: 1.52:1 with heavy-duty 3/8" bolts 

Camshaft: Hydraulic roller tappet (P4876348) 

Lift: .501" intake /.513" exhaust 

Duration at .050" 230 intake / 234 exhaust 

Valve Spring / Retainers: High-performance (P5249464) 

Valve Covers: Die cast aluminum with breather 

Block: Late 360 — Reman (thermal cycled) 

Pistons: Flat-top hypereutectic with coated skirt and valve relief 

Distributor / Ignition: High-performance electronic 

Ignition Kit (P3690426) 

Oil Pump: Melling high-volume 

Oil Pan / Pickup: Race with kick-out (8-quart) 

Water Pump: Aluminum with 6-blade — normal rotation 

Fuel Pump Eccentric: High-performance moly coated 

Fuel: 92 octane gasoline 

*P5007949 355 Horsepower Racing Engine † 

CAST 

IRON “R3” 

RACE BLOCKS* 

Building on our heritage, the R3 

race block family offers the latest in 

design technology along with the options to 

meet your specific needs. All of these blocks feature: 

• Process-controlled castings utilizing high-strength cast iron and a 

computer-controlled stress relieving process 

• 100% CNC machining with full statistical process control 

• Thick deck surface and 6-bolt cylinder head attachment (48° blocks) 

for improved sealing and reliability 

• Rough bore at 3.980" with various options that provide over-bore 

capacities up to 4.220" (in siamesed-bore versions) 

• Various options that provide deck height potentials of 8.900" to 9.560" 

• Tappet angles in both 59° (stock) and 48° (improved valve train geometry) 

• Thicker main webbing and pan rail for improved rigidity 

• 2- and 4-bolt mains in ductile iron, billet, and aluminum options 

• 318/340 main journal size 

• Machining for pre-Magnum head oiling as well as engine mounts 

(except P4876789AB) 

• 59° blocks are not recommended for use with roller tappets 

NOTE: For complete Engine Block listings, see the Race Block Application 

Chart on p. 56. 

TIMING CHAIN COVER 

Front timing chain covers to fit your needs. Package includes cover, 

seal, and gasket. For V6 and “A” engines. 

P5249930 Production Timing Chain Cover — 

9.560" deck height (up to 1991) 

P4876377 Sand Cast Race Timing Chain Cover — 

9.560" deck height (up to 1991) 

P4876631 

P4876632 

Sand Cast Race Timing 

Chain Cover — 9.00"–9.20" 

deck height, standard 

water pump 

Sand Cast Race Timing 

Chain Cover — 9.00"–9.20" 

deck height, race style water 

pump and front engine plate 

(pictured) 

340 REPLACEMENT ENGINE BLOCK 

Limited production of the original 340 block has made it very difficult to 

find in good condition. Why take a chance with a 30-plus-year-old block 

when you can buy a new one? This new casting includes the original 340 

production casting part number with an “M” 

added at the end to identify the new 

Mopar 340 block. The block 

has a few cosmetic 

differences from 

the original 340 

block, but it is 

machined to work 

with all 340 

production components. 

Special features include: 

• Brand-new castings made 

from high nickel cast iron for added strength (not a thin wall casting) 

• 4-bolt main bearing caps, 340 journal size 

• Thicker webbing and pan rail (like the 340 T/A) 

• Thicker deck surface 

• Thicker bore wall in major/minor thrust directions 

• Rough bore at 3.980" to allow various bore sizes from 4.000" to 4.080" 

size (finish bore and honing required) 

• Deck height is approximately 9.600" 

• Requires the use of oil filter part number 05281090 

• Ideal block for restoration or where racing rules require a 340 block 

• Not recommended for use with roller tappets 

• May require use of late 1970s 318 motor mount (left side) 

*P5007552 340 Replacement Engine Block 

NOTE: For complete Engine Block listings, see the Race Block 

Application Chart on p. 56. 

TIMING CHAIN TENSIONER 

This timing chain tensioner stabilizes cam 

timing by reducing timing chain slack. 

Replaces the thrust plate. Designed 

for “A” engine as well as 3.9L, 5.2L, 

5.9L and “Late 360” engines. Use 

instead of thrust plate P5249637. 

P5007709 

Timing Chain Tensioner 

18 






19

Jason Jefferson drove his No. 97 Dodge Intrepid to rookie of the year 

honors and second-place in points in the NASCAR Raybestos Brakes 

Northwest Series. A primary sponsor of Jefferson’s car is Mike 

Olson Dodge of Yakima, Wash. 

Photo: Denny Strimple 

W2 CAST IRON 

RACE CYLINDER 

HEADS 

Flat-machined rocker pads that 

require Pro Race Rocker Arms. 

Heads oiled through tappets 

and pushrods. 

Ted Musgrave had his eyes 

on the prize all season in the 

NASCAR Craftsman Truck 

Series. He earned the Bud 

Pole Championship by picking 

up four pole positions on 

the year on his way to 

third-place in the tightest 

points race in NCTS history. 

Photo: camerasinaction 

*P5007445AB 

Race 48° Cylinder Head, 65 cc 

open chamber — 15° valve angle, 

with revised intake ports 

*P5249769 Race 59° Cylinder Head, 65 cc closed chamber — 

18° valve angle 

*P5007355 Race 59° Cylinder Head, 68 cc closed chamber — 

18° valve angle 






*P4876633 Roller Tappet UGL Cam — 

use with babbitt bearings (P4876372) 

*P4876634 Flat Tappet UGL Cam — 

use with babbitt bearings (P4876372) 





NOTE: For a detailed list of UGL Camshafts, see p. 57. 








*P4876619 W2/W5 Rocker Arm System 

with .625" offset rockers 

FORGED “A” ENGINE CRANKSHAFT 

Surface hardened, forged small block cranks feature radiused fillets at 

main and rod journals. Each features a 6-bolt flange and is forged from 

4340 steel. 

*P5007253AB 

318/340 Main Forged Crank — 3.58" stroke, 

50 lbs., 2.100" rod journal, generic rear flange 

(NASCAR and late model applications) 

*P5007959 NEW! 360 Main Forged Crank — 

3.58" stroke, 50 lbs., 2.100" rod 

journal, generic rear flange † 

*P5007255 360 Main Forged Crank — 

3.58" stroke 

*P5007253 318/340 Main Forged 

Crank — 3.58" stroke 

*P5007708AB Race 48° Cylinder Head, 47 cc closed chamber — 

15° valve angle with revised intake ports 

NOTE: For a detailed list of Cylinder Heads and their applications, 

see p. 58. 

W8 ALUMINUM CYLINDER HEAD 

Designed and developed specifically for 

NASCAR and NHRA Truck programs. 

Head is partially machined for 

deck, spring seats, head bolts, 

manifolds, spark plugs and guides. 

Requires porting. 

• High-strength A355 aluminum alloy 

• 6-bolt mounting capability 

• Large port capability 

• Designed for 15° valve angle with additional 

material to permit 12° 

• 63 cc combustion chamber with a thick deck to 

permit milling 

• Requires unique valve cover, gasket, and rocker assembly 

*P4876281 W8 Aluminum Cylinder Head 


COMPOSITION MATERIAL HEAD GASKETS 

Thick, 0.040" to 0.042" unless otherwise noted, composition head gaskets 

that can be used for replacement or competition applications up to 12.5:1 

compression ratio. Sold as an engine set. “A” engine 4-bolt pattern. 

P4529454 

P4120094 

P4349557 

Composition Head Gaskets — up to 4.100" bore 

Composition Head Gaskets — up to 4.060" bore 

(0.024"–0.028" compressed thickness) 

High Comp Composition Head Gaskets — up to 4.060" bore 

NEW! “NASCAR” TOURING SERIES 

CYLINDER HEAD 

This partially machined 

cylinder head is 

machined for deck, 

spring seats, head bolts, 

manifolds, spark plugs 

and guides. Requires porting. It is approved by NASCAR for their Touring 

series. Designed and manufactured for Mopar Performance by Brodix. 


• High-flow rectangular 239 cc intake and raised exhaust ports 

• 18° valve angle with moved valve centers to allow 2.150" intake and 

1.600" exhaust valves using 11/32" stems 

• Race 59° head, 67 cc closed combustion chamber 

• Removable phosphorous bronze valve guides and ductile iron valve seats 

• Requires unique valve cover, gasket and rocker assembly 

• Use with intake manifold (P4876829AB) — requires porting 

*P5007928 NASCAR Touring Series Cylinder Head 


20 






21

WIDE VALVE COVER SET 

This wide valve cover fits on stock production “A” engines and 

W2/W5/W7/W9 flanges. Uses stock production gasket. Features 

reversed lip design that allows the cover to be wider on the same gasket 

surface. The extra width allows for larger valve springs and longer rocker 

arms. 5-bolt covers. 

P4876124 

P4876676 

P5249581 

Wide Valve Cover Set 

Stud and Bolt Kit 

High-Performance Valve Cover Gasket Set, 5-bolt, reusable 

RACE V8 SINGLE PLANE INTAKE MANIFOLDS 

— 4-BBL 

*P4876829AB 

4-bbl carburetor, aluminum, single plane, oval port, 

W2 heads, large port — 9.20" deck 

*P4529408 4-bbl carburetor, aluminum, single plane, oval port, 

W2 heads, water-heat — 9.560" deck 

*P4876162 Std. 4-bbl carburetor, aluminum, single plane, 

rectangle port, W7/W8/W9 heads — 9.560" deck 


HIGH-PERFORMANCE 

“A” ENGINE OIL PUMP 

ASSEMBLY 

This high-performance, high output 

oil pump assembly provides a 

25% increase in oil volume. Ideal 

replacement for stock pump in 

high-performance applications. 

*P4286589 Oil Pump Assembly 

“A” ENGINE OIL PUMP KIT 

Avoid oil starvation in 

“A” engines with this 

high-performance oil 

pump kit. Increases oil 

flow capacity when using 

stock pump and oil pan. 

Does not require a special 

deep pan. Includes 

pump cover, rotors 

and attaching screws. 

*P5249620 High-Performance Oil Pump Kit 

NOTE: Modification required with production pans 

MOLY COATED FUEL PUMP ECCENTRIC 

The moly coating on this fuel pump eccentric 

significantly reduces friction and wear. 

*P4120484 “A” Engine Fuel 

Pump Eccentric 

RACE “A” ENGINE ALUMINUM 

WATER PUMP 

Extra high flow aluminum 

water pump. Must be used 

with timing cover P4876632. 

*P4876548 Race Water Pump 

NEW! RACE V8 DUAL PLANE INTAKE 


*P5249572AB 

4-bbl carburetor, aluminum, dual plane, oval port, 

W2 heads — 9.200" deck 

*P5249572 4-bbl carburetor, aluminum, dual plane, oval port, 

W2 heads — 9.560" deck 

*P5007381 4-bbl carburetor, aluminum, dual plane, rectangle port, 

“Late 360” heads (1992–02) 


INTAKE MANIFOLD GASKET SETS 

Custom fit intake gaskets for use on your Mopar cylinder heads. Kits 

come complete to service 1 engine set (includes gaskets, end seals, 

o-rings, and distributor seal where applicable). 

P4120210 

P4120211 

P4007571 

P4876446 

P4876447 






MECHANICAL FUEL PUMPS 

Special high rpm for 

circle track applications. 

*P4876074 NASCAR Fuel Pump 

22 







23

SPEED 

FREAKS 

RING 

MASTERS 

MIDGET RACING — FOUR-CYLINDER 

The Team Mopar open-wheel blitz in 2003 included some 

impressive midget racing accolades. Mopar powered more 

than a dozen midget victories under USAC, BADGER, and 

other sanctions. 

Mopar also took the reins as title sponsor of two thrilling 

Mopar Twin 25’s events held at Irwindale (Calif.) Speedway 

and Indianapolis Raceway Park. Tracy Hines scored a dominating 

victory for Team Mopar in one of the Irwindale Twins, while 

Dave Steele notched a Mopar victory for the title sponsor at 

the Indianapolis Twins. Steele was the victor of a 

record midget purse of over $60,000 when 

LATE MODEL PAVED CIRCLE TRACK 

Ron Beauchamp Jr. flew the Mopar colors 

proudly in Canadian competition. 

Photo: Jamie Maudsley 

he drove his Mopar midget to a double 

feature victory in the introductory running 

of the Twin 25’s in 2002. 

Sure, Mopar powered a great deal of NASCAR victories in 2003, 

competition. Jefferson easily took home the Rookie of the 

including a runaway manufacturer championship in the Craftsman 

Year title driving one of the only Dodges in the region. 

Truck Series, thanks to teams like the No. 1 Mopar-sponsored Dodge 

Ram of Ted Musgrave and the No. 62 Dodge of Brendan Gaughan. 

And who could have missed the No. 12 Dodge Intrepid team and 

driver Ryan Newman’s slew of Winston Cup victories and poles. 

But Mopar really came through for the fendered crowd in the 

small-town bullrings and bumpy roundabouts across the United 

States and Canada. 

Scott Lynch gave Dodge its first Winston West title since 

1976. He scored three wins and picked up three poles on 

his way to also picking up the Raybestos Rookie of the 

Year title in his division. 

Mopar also supported 

the CASCAR chariot 

of Ron Beauchamp 

Dave Steele’s No. 29 is no stranger 

to Victory Lane at the biannual 

Mopar Twin 25’s events. 

Trophy photo: Randy Jones 

Mark McFarland of Winchester, Va., drove his Dodge Intrepid stock 

Jr., which sported a 

car to the NASCAR Dodge Weekly Series national championship 

dazzling Mopar paint 

and earned a chance to test in several “big-time” divisions, thanks 

scheme on the side the 

to Dodge’s support of grassroots racing. 

No. 60 Chrysler Intrepid. 

Jason Jefferson proudly represented Mopar in the Pacific 

Northwest, finishing second in the NASCAR Raybestos Brakes 

24 

Northwest Series point standings in his rookie season of 

Skip McCord is one of the countless local racers who put their 

reputations in the capable hands of Mopar night after night. 

Photo: Karen Smith 


25

MIDGET 

Looking for a real thrill? Try darting around in a 900 lb. Mopar-powered rocket ship. 

Mopar Performance loves that rush that’s created by four buzzing cylinders. 

Octane in your veins? We’ve got a four-cylinder prescription, too. 

NEW! MIDGET RACING ENGINE 

Circle track race engine designed for use in all midget series with a 

166 cubic-inch limit. Dyno tested and factory sealed to ensure consistent 

output. This complete and dyno’ed aluminum A4 engine includes injector 

stacks, fuel pump, MSD ignition box and wires, all wires and harnesses 

and a W9 cylinder head. 

Owning open-wheeled Mopars isn’t quite enough to 

satisfy NASCAR star Tony Stewart. Here he wheels 

his own car to the starting line at Madera Speedway. 

Photo: Steve LaFond 

Tracy Hines drove his No. 11 Mopar vehicle to impressive victories at the 

Mopar Twin 25’s at Irwindale and several other venues throughout the 2003 

USAC National Midget season. 

Photo: Steve LaFond 






Bore: 4.129" 



Connecting Rods: Carrillo (5.625" length) 

with 1.888" rod journals 

Crankshaft: Scat 

Cylinder Head: W9 




Valve Sizes: 2.150" intake / 

1.600" exhaust 


Camshaft: Comp roller cam with 60 mm bearings 

Lift: .735 


Valve Spring / Retainers: 1.625" diameter / 240 lbs. at 2.100" 


Block: A4 Aluminum 

Pistons: Mahle 

Distributor / Ignition: MSD Programmable 






*P5007961 Midget Racing Engine 

NOTE: Please allow 4 to 6 weeks for delivery. This engine is made to order 

by the supplier. 

Background photo: Randy Jones 

26 



27

FRONT COVER GEAR DRIVE SET 

This front cover gear drive set is designed for use with Mopar 

Performance’s aluminum 4-cylinder race blocks (P5007466, P5007467, 

P5007636 and P5007935). 

*P5007469 Front Cover Gear Drive Set 

FORGED A-4 MIDGET CRANKSHAFT 

This fully machined A-4 Midget crank features 2.000" rod journals for 

use with generic racing rods and a 6-bolt generic bolt pattern on the 

crank flange. 4340 forged steel. 

*P5007907 A-4 Midget Crank — 3.075" stroke 

A-4 ENGINE ALUMINUM MIDGET 

RACE BLOCKS 

Mopar Performance takes Midget racing to a new level with these 

lightweight aluminum 4-cylinder race blocks. They feature a 4.130" 

unfinished bore. Block comes with cast iron sleeves, billet main caps, 

main cap stud kit and hardware (no bell housing). 

*P5007466 Aluminum Midget Race Block — 

8.40" deck height, aluminum main caps 

*P5007935 NEW! Aluminum Midget Race Block — 

9.00" deck height, steel main caps 

DRAG RACE BLOCK 

This aluminum drag race block features a full bell housing, a 4.130" 

unfinished bore and 9.000" deck height (fits P5 cylinder head — 

see p. 58). Block comes with cast iron sleeves, billet aluminum 

main caps, main cap stud kit and hardware. 

*P5007467 Drag Race Block 

ALUMINUM 

WEDGE BLOCK 

This aluminum 4-cylinder Wedge block features a full bell housing, a 

4.000" bore size and a 9.000" deck height. Block comes with steel main 

caps, main stud kit and cap hardware. (Fits W8 and W9 cylinder 

heads — see p. 58). 

*P5007636 Aluminum Wedge Block 

CAST IRON CYLINDER REPLACEMENT SLEEVE 

Fits the 4-cylinder A-4 race engine. Sold individually. Use with blocks 

P5007466, P5007467 and P5007935. 

*P5007788 Cast Iron Cylinder Replacement Sleeve — 

4.130" rough bore, 4.355" OD, 5.570" length 

UGL CAMSHAFTS 

These unground lobe (UGL) cams give 

you the opportunity to dial in the 

performance you need. Requires 

finish grinding before use. 

*P5007468 UGL Cam — use with 

aluminum race blocks P5007466, 

P5007636 and P5007935 

*P5007505 UGL Cam — use with aluminum 

drag race block P5007467 

NEW! A-4 ALUMINUM GEAR DRIVE 

HARDWARE KIT 

This A-4 engine gear drive 

hardware kit includes all the 

parts necessary to change 

cams (cam hub and all 

fasteners). 

P5007853 

A-4 Gear Drive 

Hardware Kit 

OIL PAN GASKET 

This .060" paper oil pan gasket is designed for use with Mopar 

Performance’s aluminum 4-cylinder race blocks (P5007466, P5007467, 

P5007636 and P5007935). 

*P5007722 Oil Pan Gasket 

FORGED A-4 CRANKSHAFT — UNMACHINED 

This unmachined crank forging allows you to cut custom cranks. It is 

forged from 4340 steel and requires complete machining. 

*P5007573 A-4 Unmachined Crank — 3.00" to 3.25" approximate stroke 

28 






29

POWER BROKERS 

REAR-WHEEL-DRIVE DRAG RACING 

How long does it take to reach the finish line? When you’re drag racing with Mopar, it’s just a matter of choosing what division 

you wanna run. 

Steve Wann won the Division 6 Super Stock championship in 2001 in his Dodge Dakota. 

The current national et and speed record-holder in GT/TA (9.67 seconds @ 136.95 mph), 

Wann has set three other national records and won four divisional events in the five 

years he has campaigned the Hemi-colored truck. 


On the national level, Team Mopar put a ton of experience in the pits in 2003 with the likes of three-time NHRA POWERade 

Pro Stock world champion Darrell Alderman; engine builder Roy Johnson; and Roy’s son, hotshoe Allen, who hung around the 

top-five all season. Out of the other Team Mopar hauler, Larry Morgan decided to hire his legendary buddy, 10-time Pro Stock 

champ Bob Glidden, as his crew chief and team consultant. Morgan hung on to his engine building responsibilities, and Glidden’s 

arrival ignited a revitalized Morgan’s charge through the painfully competitive Pro Stock standings. 

A highlight of 2003 was, of course, the return of the 24th annual Mopar Mile-High Nationals 

at Bandimere Speedway near Denver, Colo. Mopar is proud to claim this, the longest-running 

active sponsorship of a national NHRA event, and the version 2003 was no less thrilling. 

The special sparkling “Bling bling” paint scheme on the Dodge Stratus Funny Car driven 

by Whit Bazemore was a sweet highlight on top of Thunder Mountain. 

But if you wanna talk about grassroots and devotion, this is where Mopar really kicks it. 

Mopar aims to be in tune with sportsmen racers across North America who “run what 

they brung” and always bring Mopar. The IHRA and NHRA divisional ranks feature dozens 

of fierce competitors who proudly campaign the Mopar name. 

Why conform to bow ties when they cut off the blood circulation to your brain?! 

Mopar has built much of its esteemed heritage on RWD drag 

racing, and you can put numerous pieces of that history into 

your quarter-miler if you’ve got the guts — and the traction. 

Talk about a rush! 

Three-time NHRA Pro Stock world champion Darrell 

Alderman peels off a sweet burnout with his Roy Johnsonprepared 

Mopar Dodge Stratus. 


Gary Scelzi has set NHRA Funny Car speed (mph) records on 

two occassions this season. His current record is 329.18 mph, 

which built upon his first speed record this season (328.06 mph). 

Both records were set at Route 66 Raceway near Chicago. 


Allen Johnson intently observes his 

opponents before making a qualifying pass. 

Photo: Bob Hesser 

30 

31

NASCAR NEXTEL CUP/ 

CRAFTSMAN TRUCK 

Some of the most prominent racing 

in the world circles the tracks 

of NASCAR, and Mopar 

Performance can hook 

you up here, too. 

This is your 

chance … 

are you in? 

NASCAR NEXTEL CUP/CRAFTSMAN 

TRUCK SHEET METAL 

Contact supplier directly — 

Bill Elliott scored a triumphant 

victory at North Carolina Speedway 

(2003) amidst talk of his retirement, 

the 44th of his career. 

Photo: Getty Images 

NASCAR 

NEXTEL 

CUP RACE 

BLOCK (R5) 

• Cast iron 

• Open deck design 

• Stress relieved 

• Main journal size 2.25" 

• Cross bolted steel main bearing caps 

• Must be used with the P7 cylinder head 

P5007427 

NASCAR Nextel Cup Race Block 

RACE V8 SINGLE PLANE 

INTAKE MANIFOLDS — 4-BBL 

*P5007431 4-bbl carburetor, aluminum, single plane, rectangular port, 

P7 heads — 9.0" deck 

NOTE: See the Intake Manifold Application Chart on p. 57. 

Evernham Motorsports (704) 786-1909. 

P7 NASCAR ALUMINUM CYLINDER HEAD 

Designed for NASCAR Nextel Cup program. This is the same head that 

has dominated the NASCAR Craftsman Truck Series. 

• High-strength 

aluminum alloy 

• Unique 6-bolt cylinder 

head bolt pattern 

• Partially machined 

• Use with P5007427 

“R5” block (only) 

R5/P7 WATER 

PUMP 

Designed for use on 

NASCAR applications 

with R5/P7 engines. 

*P5007744 R5/P7 

Water Pump 

*P5007428 P7 NASCAR Aluminum 

Cylinder Head 

Ted Musgrave turned in another awesome season 

in the NASCAR Craftsman Truck Series, including 

this victory at the Hardee’s 200 at Lowe’s Motor 

Speedway in May 2003. 

Photos: camerasinaction 

R5/P7 RACING GASKETS 

Designed and engineered for NASCAR competition. Exclusively for 

R5/P7 combination. 

P5007451 

R5/P7 Head Gasket Set 

R5 FUEL PUMP/PUSHROD 

High-performance mechanical pump 

for NASCAR applications. 

Machined by CV Products. 

*P5007652 R5 Fuel Pump 

*P5007745 R5 Fuel Pump 

Pushrod 

32 




33

DRAG RACE 

There’s just nothing quite like the visceral thrill of tromping on the accelerator of a 

Mopar-powered quarter-mile monster and being slammed back into your seat after 

you chop down the Christmas Tree. Mopar’s got a full array of how-to books 

and a vicious stable of hungry “A” Engine and Hemi horses to take you on an 

unforgettable trip. 

MOPAR CHASSIS — 9TH EDITION 

P5007160 Mopar Chassis — 9th Edition 

MOPAR SMALL BLOCK “A” ENGINES 

P4876826 Mopar Small Block “A” Engines 

The 24th annual Mopar 

Mile-High NHRA Nationals 

brought thousands of fans 

to Bandimere Speedway 

near Denver. 

The 1997 Chrysler Sebring of George Vignogna, a 

consistent sub-index performer within the NHRA’s 

Competition eliminator division, pulls a great 

holeshot with the R4/P5 combo. 


CAST IRON “R3” 

RACE BLOCKS* 

Building on our heritage, the R3 race block 

family offers the latest in design technology along with 

the options to meet your specific needs. All of these blocks feature: 

• Process-controlled castings utilizing high-strength cast iron and a 

computer-controlled stress relieving process 

• 100% CNC machining with full statistical process control 

• Thick deck surface and 6-bolt cylinder head attachment (48° blocks) 

for improved sealing and reliability 

• Rough bore at 3.980" with various options that provide over-bore 

capacities up to 4.220" (in siamesed-bore versions) 

• Various options that provide deck height potentials of 8.900" to 9.560" 

• Tappet angles in both 59° (stock) and 48° (improved valve train geometry) 

• Thicker main webbing and pan rail for improved rigidity 

• 2- and 4-bolt mains in ductile iron, billet, and aluminum options 

• 318/340 main journal size 

• Machining for pre-Magnum head oiling as well as engine mounts 

(except P4876381AB and P4876789AB) 

• 59° blocks are not recommended for use with roller tappets 

NOTE: For complete Engine Block listings, see the Race Block Application 

Chart on p. 56. 

CAST IRON 

“R4” RACE BLOCKS* 

Short deck cast iron race blocks 

with the following features: 

• High nickel alloy cast iron 

• Siamese bore design 

• Cross-drilled for improved 

cooling between bores 

• Stress relieved and shot peened 

• Machined for 60 mm roller cam bearings 

• Optimal valve train geometry 

• 100% CNC machined 

• Small main bearing size — 2.25" journals 

• 4-bolt main caps 

• Available with either the P5 or Wedge head bolt pattern 

FORGED “A” ENGINE CRANKSHAFT 

Surface hardened, forged small block cranks feature radiused 

fillets at main and rod journals. It features a 6-bolt flange 

and is forged from 4340 steel. 

*P5007252 318/340 Main Forged Crank — 

4.00" stroke 

*P5007254 360 Main Forged Crank — 

4.00" stroke 

NOTE: 4.00" stroke cranks require 

clearancing on block. Requires balancing. 

“A” ENGINE GEAR DRIVES 

Eliminate chain-induced cam timing fluctuations with Mopar Performance 

single idler gear drive cam center lining drive system. 

P5249758 

P5249956 

“A” Engine Gear Drive (use with fuel pump eccentric 

P4120484 — see p. 23) 

“A” Engine Gear Drive (use without fuel pump eccentric) 






*P5007437 Roller Tappet UGL Cam — use with 60 mm roller bearings 

(P5007361) 

*P4876633 Roller Tappet UGL Cam — use with babbitt bearings (P4876372) 

*P4876634 Flat Tappet UGL Cam — use with babbitt bearings (P4876372) 

*P5007932 Roller Tappet UGL Cam — use with 50 mm 

roller bearings (P4876707) 

NOTE: For a detailed list of UGL 

Camshafts, see p. 57. 

NOTE: For complete Engine Block listing, see the Race Block Application 

chart on p. 56. 

34 




35

DRAG RACE W8 ALUMINUM CYLINDER HEAD 

Designed and developed specifically for NASCAR and NHRA Truck 

programs. Heads are partially machined for deck, spring seats, head 

bolts, manifolds, spark plugs and guides. Requires porting. 

• High-strength A355 aluminum alloy 

• 6-bolt mounting capability 

• Large port capability 

• Designed for 15° valve angle with 

additional material to permit 12° 

• 63 cc combustion chamber with a 

thick deck to permit milling 

• Requires unique valve cover, gasket, 

and rocker assembly 

*P4876783 Drag Race W8 Aluminum 

Cylinder Head 

NOTE: For a detailed list of Cylinder Heads 

and their applications, see p. 58. 

W8 VALVE COVER SET 

These distinctive magnesium valve covers are designed exclusively 

for Mopar Performance W8 cylinder heads. Sold as a pair. 

P4876699 

P4876401 

P4876676 

Magnesium W8 Valve Cover Set 

W8 Valve Cover Gasket Set 

Stud and Bolt Kit 

Allen Johnson finished sixth in the final standings 

of the super-competitive NHRA POWERade 

Pro Stock division. 


P5 HEMI ® SMALL BLOCK CYLINDER HEADS 

Designed for race applications. Special features include: 

• High-quality aluminum casting 

• Unique valve cover design 

• Semi-machined (requires machining and porting) 

• 5/16" valve stem size 

• Unique 6-bolt cylinder head mounting design for improved sealing 

• Unique valve angles (designed for 10° intake, 2° exhaust) 

• For use with P5007151 “R4” cast iron block and A4-4 cylinder block 

*P5007509AB P5 Hemi Partially Machined Cylinder Head 


P5 VALVE COVERS 

Magnesium Valve Cover Set for P5 Hemi Cylinder Heads 

P5007218 

P5007642 

P5 Hemi Valve Cover Gasket Set (o-ring style) 

P5 Hemi Valve Cover Set 

RACE V8 SINGLE PLANE INTAKE 

MANIFOLD — 4-BBL 

*P5007420 Std. 4-bbl, aluminum, single plane, rectangle port, 

W7/W8/W9 heads — 9.0" deck 

NOTE: See the Intake Manifold Application Chart on p. 57. 

P5 RACING GASKETS 

Designed and engineered for NHRA ProStock Truck competition. 

Exclusively for R4/P5 combination. 

P5007452 

P5007168 



INTAKE MANIFOLD GASKET SET 

Custom fit intake gaskets for use on 

your Mopar cylinder heads. Kits 

come complete to service 1 

engine set (includes gaskets, 

end seals, o-rings, and 

distributor seal where applicable). 

P5007454 

P5 Intake Manifold Gasket Set 

— 0.045" thick 

P5007496 W8 Intake Manifold Gasket Set — 

0.030" thick 

P5007497 

P5007498 



36 



Go to mopar.com for complete product listings. or vehicles registered for highway use. 


37

Recipe R4/P5 at work again, this time under the hood of Craig Eaton’s 

Competition eliminator Dodge Neon, driven by Mike DePalma Jr. DePalma 

is a national record holder and former NHRA Division 7 Comp eliminator 

champion in this car, which now competes as a B-altered. That 

barbed wire look is catching on quite nicely, don’t ya think? 


HEMI ® PRO 

STOCK BLOCK 

• Cast iron with 

Mopar/Hemi logos cast in 

• 4.90" bore centers 

• 9.28" deck height as shipped 

• Full skirt design 

• Cross-bolted mains on all 5 

• Aluminum main caps 

• 6-bolt head design, 5 bolts and 1 stud in the tappet chamber 

• Cylinder bore range — 4.65" to 4.70" plus 

• Requires aluminum front seal plate (P5007137) and aluminum 

rear seal plate (P5007138) 

*P4876887AB 

Rough Bored Hemi Engine Block 

HEMI ® PRO STOCK HEADS 

Now you can power up with the same cylinder heads 

used on the Mopar-sponsored Stratus currently 

running in the NHRA ProStock series. 

• Made of heavy-duty 355 aluminum 

• 6-bolt head pattern 

• Intake valve to one side of 

chamber, exhaust valve 

to other side of 

chamber 

• Both ports are 

designed round 

• Intake ports point 

straight at carbs 

• Valve alignment E-I-I-E-E-I-I-E 

• Uses individual rocker shaft system 

• Oil drain at each end of the head 

• Requires finish machining 

*P4876883AB 

Hemi ProStock (NHRA) Head — 4.90" bore center 

*P5007135 Hemi ProStock (IHRA) Head — 5.00" bore center 

COMPOSITION MATERIAL HEAD GASKETS 

P5007459 

P5007191 

Hemi ProStock Head Gaskets — up to 4.700" bore 

Hemi ProStock Head Gaskets — up to 4.670" bore 

ALUMINUM HEMI ® PRO 

STOCK FRONT SEAL 

RETAINER PLATE 

Requires seal P5007229. 

P5007137 

Aluminum Hemi 

ProStock Front Seal 

Retainer Plate 

ALUMINUM HEMI ® 

PRO STOCK REAR 

SEAL RETAINER 

PLATE 

P5007138 

Aluminum Hemi 

ProStock Rear Seal 

Retainer Plate 

CAST MAGNESIUM HEMI ® PRO STOCK 

VALVE COVER 

• Designed for Hemi ProStock heads only 

• Single plug design 

• Hemi logo cast in 

• Sold individually 

P4876884 

P5007300 

P5007218 

Hemi ProStock (NHRA) Valve Cover — 4.90" bore center 

Hemi ProStock (IHRA) Valve Cover — 5.00" bore center 

Hemi ProStock Valve Cover Gasket Set (o-ring style) 

NEW! P5 AND PRO STOCK HEMI ® IGNITION 

WIRE SET 

Specifically designed for P5 and ProStock Hemi cylinder head applications. 

P5007248 

P5 Hemi Ignition Wire Set 

STREET HEMI ® HIGH-OUTPUT FUEL PUMP 

Produces higher fuel flow than stock (80 gph at 8.7 psi). 

*P4007039AB 

Hemi High-Output Fuel Pump 

*P5007178 Hemi ProStock (IHRA PRO MOD) Head — 5.00" bore center 


38 




39

INNOVATION, NOT IMITATION 

SPORT COMPACT DRAG RACING 

The Mopar name and logo burst on the sport compact drag racing scene in 2003, 

thanks in large part to the efforts of two outstanding teams — Darrell Cox 

Racing and NuFormz Racing. 

Darrell Cox builds the potent Mopar powerplants for his self-named race 

team based in North Carolina. Scott Mohler and Mike Crawford pound 

the pedals for the team’s two entries. “I can’t tell you how much it 

means to have Mopar’s backing,” Cox said. “The technological and 

engineering support have been second to none.” 

While Darrell Cox Racing tears up the East Coast, Shaun Carlson and 

NuFormz Racing are having their way with the competition out West in 

their Dodge SRT-4 — with help from Mopar, of course. In 2003 both 

Carlson and Mohler set NHRA elapsed time and speed records in 

their respective classes. Mohler earned the championship of the 

All Motor division of the NHRA Sport Compact series while 

racking up six final round appearances in 10 events. 

Mike Crawford lights ‘em up in his Hot Rod division Dodge 

SRT-4. The 2100 lb. car easily streaks to quarter mile times 

in the low 8s, courtesy the methanol-fueled A855 engine. 

Photo: dragracecentral.com 

THROWIN’ 

STONES 

SCCA PRORALLY 

Mopar and Dodge made a huge splash in two-wheel-drive (2WD) 

SCCA ProRally competition this year, capping off the season with 

several championships, including manufacturers’ crown, and nine 

class victories over eight rallies. 

Doug Shepherd drove a Mopar-painted Dodge SRT-4 to his third 

career Jon Woodner Cup as the overall 2WD champion, winning 

the last five events of the season. His co-driver Pete Gladysz 

picked up the Grant Whitaker Cup as overall 2WD co-driving 

champion, and they each earned respective driver and co-driver 

championships in Group 5. 

Not to be outdone, Chris Whiteman and his co-driver Michael 

Paulin tossed their Dodge Neon SXT to three Group 2 victories 

and the class championship. 

Front- or rear-wheel-drive; it makes no difference. 

If it needs to go fast, then Mopar is the way to 

go. The Street Essentials Guide from Mopar 

Performance carries a wide variety of the parts 

that the Mopar FWD drag racers use to crush 

their competition. 

Tuner extraordinaire Shaun Carlson helped 

thrust Mopar into the spotlight of sport 

compact drag racing courtesy of his 950+ 

hp Pro FWD division rocket, driven by 

Darrell Cox-built Mopar power. 


All three NHRA Sport Compact cars with Darrell Cox engines use a plethora of stock 

Mopar parts. The SRT-4 of Mike Crawford, for instance, uses: 

Both SCCA ProRally championship vehicles use many stock 

Mopar parts. Parts on the Shepherd/Gladysz SRT-4 are almost 

all production 2003 Dodge SRT-4, including: 

Turbocharger (TD04R-L6), Block, Crankshaft, Pistons, Stroke, Rocker Arms, Hydraulic 

Lifters, Cylinder Head, Valves, Camshaft, Lash Adjusters, Fasteners, Gaskets/Seals, 

Ignition, Fuel Injectors (2004), Throttle Body, Intercooler/Radiator, Oil Pan, Oil Pump, 

Oil Filter, Timing Belt, Water Pump, Main Bearing, Engine Starter, T850 with Close 

Ratio Gearing, Production Clutch, Pressure Plate and Flywheel, Steering 

Knuckles, SRT-4 Unibody (Lightened and Strengthened) 

40 

Scott Mohler “granny shifted” his 5-speed 

1998 Dodge Neon ACR to the championship of the NHRA 

Sport Compact All Motor division, clinching the trophy in 

grand fashion in the final event of the season. 


Original Equipment Parts: 

Engine block 

Crankshaft 

Fasteners, rocker arms, hydraulic lifters 

Gaskets and seals 

Bearings 

Oil pan, filter, pump and pickup tube 

Timing belt 

Water pump 

Main bearing 

Cylinder heads 

Flexplate (flywheel) 

Engine starter 

Stroke (3.976) 

Bore (3.445) 

3-speed automatic (31TH) 

Steering knuckles 

Unibody (lightened and strengthened) 

Parts from Mopar Performance 

(see Street Essentials Guide): 

Stage Coilover Suspension Kit 

Proportioning brake valve 

Lash adjusters 

Spark plug wires 

Performance gauges 

Powder-coated valve cover 

Reverse valvebody — transmission 

Parts from Mopar Performance 

(See Street Essentials Guide): 

Stage 1 Turbo Upgrade Kit 

Stage 3 Coilover Suspension Kit 

Performance gauges 

Doug Shepherd and Pete Gladysz attacked many an apex on their way to 

several decisive SCCA ProRally championships in 2003. This car’s not too far 

from stock… think you can challenge these two veterans? Good luck! 

Photo: Chris Scurti 


41

HIGH-PERFORMANCE 

MOPAR SMALL BLOCK 

“A” ENGINES 

P4876826 

Mopar Small Block 

“A” Engines 

“A” ENGINE HONING PLATE 

For engine build-up or rebuilds, 

honing plates provide extreme 

accuracy for precision work 

and allow maximum 

horsepower output. Special steel 

torque plate tools are designed to 

allow the bores to be honed as 

required for high output, high rpm 

engines. These honing plates are 

constructed from billet steel for greater 

accuracy and reliability. 

P4876553 Engine Honing Plate — 

4.250" max bore 

OFFSET 

CAMSHAFT KEY 

For centerlining your cam, 

these hardened keys are 

color coded in 1°, 2°, 3°, 

4° and 5° increments. 

Production key is used 

for zero offset. 

*P4286500 Offset Camshaft Key 

HEAVY-DUTY CAST “A” ENGINE CRANKSHAFT 

Surface hardened, forged small block cranks feature radiused fillets at 

main and rod journals. It features a 6-bolt flange. 

P5007256 

318/340 Main Forged Crank — 3.58" stroke 

ALL-OUT RACE CHAIN AND SPROCKETS 

Matched sprockets and double roller chain for all-out race applications. It 

has 3 matched keyways to adjust cam timing. Kit includes magna-fluxed 

sprockets and roller timing chains. 

*P3690866 Standard Size Race Chain and Sprockets 

*P4876559 .005" Oversize Race Chain and Sprockets 

*P4876560 .010" Oversize Race Chain and Sprockets 

*P5249131 Replacement Double Roller Chain for Cloyes Race Application 

SPECIAL HYDRAULIC 

PUSHRODS 

Designed to allow the use of “Late 360” 

heads and rockers on standard 1967–91 

“A” short blocks/engines. Requires the 

use of “Late 360” cylinder heads, special 

tappets P4529220 (16), and rocker arms 

P4876050 (8) to oil rocker arms through 

tappet and pushrod. Sold in sets of 16. 

P5007477 

7.625" Hydraulic Pushrods 

“A” ENGINE 

We’ve got so many racing parts that we just can’t get them into a few clean categories. Take a look through these pieces that can be 

used in multiple applications, and don’t forget the manual on the versatile small block “A” engine. 

“LATE 360” 

ALUMINUM 

CYLINDER HEADS 

These heads feature: 

• Uses 10-bolt production valve 

cover design 

• Uses 8 mm valve stems 

• Unique vertical style intake manifold attachment 

• Machined for 1.92" intake and 1.625" 

exhaust valves 

• Designed with smaller 53 cc combustion chamber 

• Uses production exhaust flange pattern 

• No heat crossover 

• Intake runner 177 cc 

*P4876624 Magnum Aluminum Head 

P4876759 

Head Bolt Kit 

NOTE: Production guide plates must be drilled to 3/8”. For a detailed list 

of Cylinder Heads and their applications, see p. 58. 

HOOD PIN AND CABLE KIT 

Kit includes a pair of hood pins and complete attachment hardware. 

Exposed hardware is chrome plated. 

P4529405 

Hood Pin and Cable Kit 

DRILL FIXTURE TOOL 

Developed to add tappet oiling for 

48° “R” blocks. 

P5007728 

Drill Fixture Tool 

“LATE 360” CAST IRON CYLINDER 

HEAD ASSEMBLY 

• 1993 and newer production 360 head assembly 

• 10-bolt valve cover design 

• Vertical style intake manifold 

attachment 

• Stud mounted rocker arms 

• Includes valves, springs, 

and retainers 

• Use with rocker arms P4876050 (8), 

pushrods P5007477, and tappets 

P4529220AB (16) (on 1967–91 

short block) 

• Use with intake P5007380 or P5007381 

and valve cover P5007617 

• 1.92" intake and 1.625" exhaust valves 

*P5007086 ”Late 360” Cylinder Head Assembly 

*P5007145 Heavy-Duty “Late 360” Cylinder Head 

Assembly (R/T) 

P4876759 Head Bolt Kit 


A-BODY TORSION BAR SETS 

Mopar Performance offers torsion bars for A-body cars in a variety of 

diameters for restorations, performance and racing. Improve the 

suspension performance and increase cornering ability or weight transfer 

of your vehicle with these Mopar Performance torsion bar sets. A-body 

bars are 35.7" long. These sets bolt right in to stock locations without 

modifications (sold as sets). 

P5249151 

P5249152 

P5249154 

A-Body Torsion Bar Set — .920" diameter (performance 

handling, solo racing) 

A-Body Torsion Bar Set — .990" diameter (performance 

handling, solo racing) 

A-Body Torsion Bar Set — 1.090" diameter 

(1/4- or 1/2-mile circle track racing) 

P5249155 A-Body Torsion Bar Set — 1.140" 

diameter (1/4- or 1/2-mile 

circle track racing) 

42 







43

Doug Stewart of Stewart Racing catches a great light in his C/SMA Dodge 

Stratus in NHRA Division 3 competition, which was the recipient of a 

number of NHRA “Best Engineered” awards in 2003. The R4/P5 

“semi-Hemi” small block is also the powerplant in the PST/A 

Dodge Dakota piloted by Stewart brother, Jimmy. 


VALVES 

Get the most out of your small block engine with Mopar Performance valves. 

• All stainless valves have swirl-polished underheads 

• All stainless valves have no flat or ski jump areas on the underheads 

See a detailed list of Mopar Performance Valves on p. 59. 

RACE ENGINE 

VALVE SEALS 

Sold in sets of 16. Valve 

guide will require machining. 

P3690963 

P4876099 

P4876100 

3/8" stem size 



VALVE STEM LASH CAPS 

• Fit between the end of the valve and the rocker arm tip 

• Hardened steel for improved rocker tip durability 

• Larger area than stock valve tip to help spread the rocker loads 

• .080" Thick 

• Sold in sets of 16 

*P4120626 3/8" stem size 

*P4120635 5/16" stem size 

*P4529839 11/32" stem size 

“A” ENGINE VALVE SPRINGS (LONG VALVES) 

See Valve Springs Chart on p. 59. 








*P4876621 “Late 360” V8 (1992–2003 heads) 

Rocker Arm System — .080" 

offset rockers (1.5 ratio) 

NEW! RACE V8 DUAL PLANE INTAKE 


*P4876335 4-bbl carburetor, dual plane, rectangle port, all std., 

1967–91 heads — 9.560" deck 

*P5007381 “Late 360” with vertical screws, 4-bbl carburetor, aluminum, 

dual plane, 1993 and newer 360 heads — 9.560" deck 


RACE V8 SINGLE 

PLANE INTAKE 


*P4876334 4-bbl carburetor, aluminum, 

single plane, rectangle port, all std., 

1967–91 heads — 9.560" deck 

*P5007380 “Late 360” with vertical screws, 4-bbl carburetor, 

aluminum, single plane, 1993 and newer 360 heads — 

9.560" deck 


“A” ENGINE W5/W7/W9 MANIFOLD 

END SPACERS 

Designed to fill the gap between the intake manifold and the block when 

installing W5/W7/W9 heads on stock height blocks. Use in conjunction 

with RTV and standard end seal gaskets. 

Sold in sets of 2. Gasket not included. 

P5249619 

W5/W7/W9 Manifold 

End Spacers 

44 



or vehicles registered for highway use. or vehicles registered for highway use. 

Go to mopar.com for complete product listings. 45

SMALL BLOCK RACE OIL 

RESTRICTION PACKAGES 

Blocks off oil to right side tappet bores. Required for race engines 

with high-lift roller cams. 

*P4120603 V8 Tube and Peen Tool Package 

*P5249508 V8 Drill and Ream Package 

RIGHT ANGLE OIL 

FILTER ADAPTER KIT 

Package allows 90° rotation of 

the oil filter. Made of aluminum 

and provides necessary clearance 

for headers, engine swaps, etc. 

Filter not included. Fits small 

block engines up to 2003. 

*P5249624 Right Angle Oil 

Filter Adapter Kit 

*P5249320 Oil Filter Adapter 

Gasket Set 

*P5007515 Oil Filter Adapter 

Mounting Screw 

Adapter Kit 

MECHANICAL 

FUEL PUMPS 

Great for oval track — 3 times greater 

fuel flow than production. 

*P4529368 318/340/360 Race 

Maximum Capacity 

Fuel Pump 

SMALL BLOCK DUAL PICKUP BILLET 

DISTRIBUTOR 

Developed and tested in 

conjunction with the 

NASCAR Truck programs, 

this distributor features: 

• Extended 6061-T61 billet housing for 

increased bearing support 

• 2 sealed ball bearings 

• 2 magnetic pickups 

• The ultimate for racing applications 

*P4876735 Billet Distributor 

NOTE: Not for use in production engines. Requires dry sump 

oiling system. 

90° WATER NECK OUTLET 

Cast aluminum 90° water neck outlet provides greater flexibility 

in routing cooling system hoses. 3-direction capability ideal for 

compact engine compartments. Improves the appearance of the 

engine compartment. 

HIGH-PERFORMANCE OIL FILTER 

This oil filter is engineered to meet the demands of heavy-duty and 

high-performance applications. 

P4452890 

Black Finish Oil Filter 

RACE OIL FILTER 

High-performance, heavy-duty, race oil filter has a thicker canister with a 

high burst strength. Each filter is black with the Mopar Performance logo. 

P4529190 

Race Oil Filter 

SMALL BLOCK DISTRIBUTOR / OIL PUMP 

DRIVESHAFT GEAR ASSEMBLY WITH 

HARDENED TIP 

Features hardened tip shaft with full radius blend from hex to 

round and pinned gears. 

P3690715 

P3690874 

Distributor / Oil Pump Driveshaft Gear Assembly 

Distributor / Oil Pump Driveshaft Gear Assembly 

(for billet roller cam only, aluminum-bronze gear) 

P5249191 

90° Water Neck Outlet 

EXHAUST HEADER GASKETS 

These exhaust header gaskets are made from special extra 

high-temperature material for added strength and durability. 

P5007157 

W8/W9 Exhaust Header Gasket 

P4876102 “A” Engine and “Late 360” 

Exhaust Header Gasket 

P4876103 

P5007455 

W2 Exhaust Header Gasket 

P5 Exhaust Header Gasket 

CAPACITIVE DISCHARGE IGNITION 

CONTROLLERS 

Features include: 

• Capacitive discharge ignition control 

• Built-in soft touch rev control 

• Multi-spark capability below 3000 rpm 

• 115 millijoules per spark 

• Can be triggered with the use of a magnetic pickup or by 

breaker points 

*P4876728 MSD 6AL Ignition Controller 

*P4876729 MSD 6ALN Ignition Controller — potted in clear silicone 

elastomer for additional vibration protection and is equipped 

with a 6-pin Weatherpak connector as specified by NASCAR 

*P4876730 MSD 6TN Ignition Controller — same as P4876729 except 

that it requires a separate external rev control 

46 







47

VIPER 

The production Dodge Viper SRT-10 is a sweet serpent, we know. But the bad-ass Dodge Viper Competition Coupe takes absolutely 

zero prisoners. Check out the plethora of new parts for the Viper SRT-10 that come straight off of the Competition Coupe. 

And don’t forget the durable Viper GTS-R hardware offered for the first 

generation of Dodge Viper coupes. 

These are the perfect pieces to help set your Dodge Viper 

even further apart from the rest. Have you been bit? 

NEW! RACE 

ENGINE 

CONTROLLER † 

The 2003 and 2004 Viper 

SRT-10 race engine 

controller is specifically 

calibrated for use with camshaft (P4510171) and 3" race exhaust 

(P4510176). It optimizes fuel/air tables for peak performance without 

catalytic converters, removes the skip shift feature (found on the 

production model) and is calibrated for premium pump fuel (91 octane 

minimum). For race use only — not emission legal. 

Total performance increase with exhaust and camshaft: 

Horsepower increase = 44 bhp at 4800 rpm 

Torque increase = 48 ft. lbs of torque at 4800 rpm 

*P4510172 Viper SRT-10 (2003–04) Race Engine Controller 

NEW! CAMSHAFT † 

This race camshaft is standard on all 

Competition Coupes. Uses production springs 

and rocker arms to offer a 6–8 horsepower 

increase at top end of rpm range. Recommended 

for use with race engine controller (P4510172) and 

3" race exhaust (P4510176). 

Cam lift: 0.320" intake and 0.320" exhaust 

Duration: 220.0 at 0.050" intake and 230.5 at 0.050" exhaust 

Cam Centerline = 117° after top dead center 

*P4510171 Viper SRT-10 (2003–04) Comp Coupe Camshaft 

Combining the best performance with the most outrageous graphics, Marko 

Radosavljevic (who is also president of the Nevada chapter of the Viper Club of 

America) decided to adorn his Viper Competition Coupe with the new Mopar 

barbed wire look. Who says you can’t improve on perfection? 

NEW! UNDERDRIVE 

CRANK PULLEY † 

This underdrive pulley was 

developed for the Competition 

Coupe. It improves water pump 

efficiency at high rpms. Constructed 

of hard-coated aluminum. Requires a 

unique belt. 

P4510177 

Viper SRT-10 (2003–04) Underdrive Crank Pulley 

NEW! ACCESSORY DRIVE BELTS † 

Required for use of Underdrive Crank Pulley (P4510177). 

P4510224 Viper SRT-10 (2003–04) Accessory Drive Belts — 

for vehicles with A/C 

P4510225 Viper SRT-10 (2003–04) Accessory Drive Belts — 

for vehicles without A/C 

P4510233 

Viper SRT-10 (2003–04) A/C Compressor Removal Bolt Kit 

NEW! RACE OIL PICKUP † 

This articulating oil pickup swings to oil location under high lateral g 

maneuvers and provides consistent oil pressure during race conditions. 

It utilizes the same design as used on the Viper Competition Coupe. 

Kit includes pickup assembly and replacement oil pan. 

*P4510174 Viper SRT-10 (2003–04) Race Oil Pickup 

48 


† Late availability. Go to mopar.com for complete product listings. 

49

NEW! RACE LIMITED SLIP DIFFERENTIAL † 

The Viper SRT-10 Race Limited Slip Differential is based on the same 

design used in both the Competition Coupe and GTS-R. Race-tuned, 

viscous speed-sensing limited slip differential provides smooth transition 

during torque biasing. It is a complete assembly with Dana 44 3.07 final 

drive ratio. Purchase of Differential Oil Cooler (P4510173) is recommended. 

P4510170 

Viper SRT-10 (2003–04) Race Limited Slip Differential 

NEW! PERFORMANCE SIDE EXIT EXHAUST † 

This 3" race exhaust system provides low restriction from manifold to 

tip. Catalytic converters are eliminated (upstream and downstream), and 

it has a side exit from the sill that removes H-pipe crossover. This system 

represents more than 30 lbs. savings when compared to the production 

exhaust system. The exhaust muffler is tuned to minimize noise where 

track restrictions are present, yet it yields a deep sounding exhaust note. 

Race engine controller (P4510172) required. Controller calibrated for 

camshaft (P4510171) — installation highly recommended. 

Power and Torque Increase (Exhaust, Cam, Controller vs. Stock): 

Horsepower Increase = 44 BHP at 4800 rpm 

Torque Increase = 48 ft.-lbs. at 4800 rpm 

*P4510176 Viper SRT-10 (2003–04) Performance Side Exit Exhaust (+10 bhp) 

NEW! HEAT SHIELD KITS † 

These flexible heat shield boots lower 

joint temperature and protect the rubber 

boot from thermal cracking. Heat shields 

slip over existing rubber boots — no 

modifications required. Recommended 

for racing use. Includes: 

8 ball joint boots (1 vehicle set) 

4 tie rod boots (1 vehicle set) 

P4510144 

P4510161 

Viper (1996–04) Ball Joint Heat Shield Kit 

Viper (1996–04) Tie Rod Heat Shield Kit 

NEW! DIFFERENTIAL OIL COOLER † 

The external cooling features of the differential cooler lowers internal 

differential temperatures under race conditions. Its electric circulating pump 

and ducted fan provide reliable operation. Temperature switch activated 

based on differential fluid temperature. Includes braided stainless steel 

lines and inline oil filter. All hardware and wiring included. Requires no 

modification or drilling of the differential housing. 

P4510173 

Viper SRT-10 (2003–04) Differential Cooler 

NEW! SHORT THROW SHIFTER † 

Shift throw reduced by 40%. One-piece shift stick and 

gold anodized billet aluminum construction for durability, 

with an exclusive Viper Head shift ball (shift ball height 

is reduced for competition feel). Customizable biasing 

spring kits are also available from Hurst. 

P4510168 

P4510169 

Viper (1992–04) Hurst Shifter 

NEW! LIGHTWEIGHT FLYWHEEL † 

High-strength alloy steel Competition Coupe 

Flywheel. Flywheel is direct replacement for stock 

SRT-10 part and uses production clutch assembly. 

Reduction of 9.4 lbs. (31%) in flywheel mass, 

and 39% in flywheel rotating inertia. No release 

bearing changes, crank trigger changes or 

calibration required. 

Viper SRT-10 (2003–04) Flywheel 

RING AND PINION SETS — 1996–00 

Stronger than other units currently available in the aftermarket. 

Note that these are only for Dana Super 44 differentials with 

3/8" diameter ring gear retaining bolts. 

*P5007022 Viper RT/10 (1996–00) 

and GTS 3.73 Gear Set 

*P5007043 Viper RT/10 (1996–00) 

and GTS 4.10 Gear Set 

RING AND PINION 

SETS — 2000–04 

Upgraded to stronger 7/16" diameter ring gear retaining bolts. Requires 

P5007555 Trac-Lok when installed in 1996–00 Dana Super 44 differential. 

7/16" diameter bolts included in P5007553 Build-Up Kit and P5007554 

Service Kit. 

• 2001 production Trac-Lok units use 7/16" diameter ring gear 

retaining bolts 

*P5007525 Viper (2000–04) 3.55 Gear Set 



NEW! HIGH DUROMETER 

TRANSMISSION 

MOUNTS † 

Urethane mount reduces 

transmission movement under 

high-load conditions. Improved life 

compared to stock rubber mount. Same 

as used on Comp Coupe. 

P4510179 

Viper SRT-10 (2003–04) High Durometer Transmission Mounts 

NEW! SPHERICAL BEARING CONTROL ARMS † 

These complete control arm assemblies with spherical bearings installed 

at the frame mounting points improve handling response 

through reduced compliance in race conditions. 

Features the same design used on the Viper 

Competition Coupe and Viper GTS-R. Kit 

includes front/rear and upper/lower control 

arm assemblies and all necessary spacers. 

Heat shield kits recommended (P4510144 

and P4510161). Race only. 

P4510241 Viper SRT-10 (2003–04) 

Spherical Bearing Control Arm Kit 

NEW! SOLID STEERING GEAR MOUNTS † 

Solid Steering Rack Mounts improve turning and handling response. They 

are a direct replacement for rubber isolator mounts found in production 

Vipers. Constructed of lightweight aluminum for strength and durability. 

P4510089 

Viper (1994–04) Solid Steering Gear Mounts 

50 




† Late availability. Go to mopar.com for complete product listings. 

51

GTS-R ALTERNATOR 

For race use with auxiliary driving lights only. 

• Internally regulated — will not work 

with production or Mopar 

Performance ECU 

• Same weight as 

production 

• 135 amp output 

P4876842 

Viper GTS-R 

Alternator 

GTS-R MAIN BEARING SETS 

Select fitting of the engine bearings is beneficial to long engine life, 

especially for those used in 24-hour endurance racing like Daytona 

and Le Mans. 

• Set includes 5 unflanged bearings and 1 flanged thrust bearing 

• Tri-metal design 

• Wide oil groove 

• GTS-R race engine only 

P4876835 

P4876836 

0.001" Undersize Viper GTS-R Main Bearing Set 

0.002" Undersize Viper GTS-R Main Bearing Set 

GTS-R SERPENTINE BELT 

Designed to fit GTS-R engine with modified crank, water pump, 

and power steering pump pulleys. 1877 mm length. 

GTS-R RACE BLOCK 

The GTS-R race block is derived from the production casting, but 

machined to accommodate a dry sump oil pump, which eliminates the air 

conditioning compressor mounts. 

• 356 — T6 casting with pressed-in dry, centrifugal cast cylinder liners 

• Cross-bolted, cast solid nodular iron main caps machined for 

oil pan scraper 

• 2 3/4" main bearing bore diameters (for GTS-R crank only) 

• 0.125" thick liners for reduced bore distortion at high loads 

• Rolled threads for cylinder head attaching studs 

*P4876831 Viper GTS-R Race Block 

GTS-R CNC-PORTED CYLINDER HEAD 

New 356T aluminum casting fully machined with oversize 

CNC ports and combustion chamber. 

• Port volumes 269 cc and 76 cc for intake and 

exhaust respectively 

• Bolts directly to production or GTS-R blocks 

• 18° inline valve angle 

• 64 cc combustion chamber 

• Beryllium copper valve seats 

• Magnesium bronze valve guides 

*P4876838AB Viper GTS-R, GTS (1996–01) 

and RT/10 (1997–01) 

CNC-Ported Cylinder Head 

GTS-R RACE CRANKSHAFT 

Starting with the production forging, the GTS-R crank is modified for 

increased strength and durability required to withstand loads encountered 

during racing. 

• 3.88" stroke 

• Twisted micro alloy steel forging for improved durability 

and minimum deflection 

• Full radius fillets on main and rod journals 

• 2.750" diameter cross-drilled main journals, 2.125" 

diameter rod journals 

• Induction hardened main and rod journals for increased 

load carrying capabilities 

• Fully contoured counterweights for improved 

windage and oil management 

• Requires Mopar select fit bearings (P4876835 or P4876836) 

*P4876833 Viper GTS-R Race Crank 

P4876843 

Viper GTS-R Serpentine Belt 

GTS-R 8.5MM SPARK PLUG WIRE SET 

• For use on GTS-R chassis with front-mounted coils only 

• Suppression-type compatible with engine control unit 

• 8.5 mm diameter, high-temperature material for added durability 

• Individually numbered for each cylinder 

• Production-style spark plug terminals and boots 

• Sold as set only 

P4876844 

Viper GTS-R Spark Plug Wire Set 

52 






53

SEA 

MONSTER 

It’s a unique sound, unlike any other that you’ll hear on the water. And when 

you experience the throaty rumble of the 505-cubic-inch Dodge Viper crate 

engine coming from a 32-foot powerboat, it will make you wonder why 

anyone would choose a V8 engine when they could have a V10. 

Thanks to Ilmor Marine Engines, LLC. and Mopar Performance, boaters won’t 

have to “settle” for V8s anymore. Ilmor has taken a Viper V10 engine, kicked 

up the horsepower and torque, and adapted it for marine use. And the results, 

as you might expect, are spectacular. 

The finely balanced V10 provides amazing smoothness in running over typical 

V8 applications. With more than 500 ft.-lb. of torque at 2500 rpm, driving a 

boat equipped with the V10 is exceptionally easy. And the low engine weight 

allows for greater overall performance. 

In developing the V10 beast for the water, Ilmor made the engine a little more 

bulletproof in consideration of the pounding it would take on the waves. One 

major change included using a camshaft developed by DaimlerChrysler’s 

Performance Vehicle Operations (PVO). The new PVO cam picks up more 

power without sacrificing torque. 

Also, unlike the street version of the engine, the marine application has a 

completely open exhaust. This means it comes out as genuine 550 

horsepower as tested. The next best normally aspirated engine on the marine 

market today is at 525. And if you have to ask whether that extra 25 hp is 

important, then you don’t know Mopar Performance customers. 

Contact Ilmor Marine Engines at (734) 456-3600 for more information. 

PERFORMANCE 

P4876667 

Neon Performance 

Modifications 

(350 pages) 

P5007520 

Mopar Sprint Car 

Engine Build-Up 

Manual 

(64 pages) 

P5007450 

Mopar Late Model 

Oval Track Engine 

Build-Up Manual 

(96 pages) 

BOOKS 

P5249959 

Mopar Oval Track 

Modifications — 3rd Edition 

(500 pages) 

P5007160 

Mopar 

Chassis — 

9th Edition 

(448 pages) 

P4876826 

Mopar Small Block 

“A” Engines 

(400 pages) 

P5007373 

Mopar 358 Oval 

Track Engine 

Build-Up Manual 

(56 pages) 

54 


55

ENGINE 

APPLICATIONS 

UGL (UNGROUND LOBE) CAMSHAFTS 

CAST IRON “A” ENGINE “R4” RACE BLOCK APPLICATIONS 

Part Number Cylinder Head Deck Nom. Deck Min. Overbore Cap Design Tappet Angle Journal Size Notes 

*P5007151AB P5 8.580" 8.245" 4.220" 4 Bolt – Aluminum 45° Intake/59° Exhaust 2.25" (3, 11) 

*P5007151AC P5 8.580" 8.445" 4.220" 4 Bolt – Aluminum 45° Intake/59° Exhaust 2.25" (3, 11) 

*P5007270AC Wedge 8.580" 8.445" 4.220" 4 Bolt – Steel 48° Intake/48° Exhaust 2.25" (3, 9) 

CAST IRON “A” ENGINE “R3” RACE BLOCK APPLICATIONS 

Part Number Deck Nom. Deck Min. Block Style Overbore Cap Design Tappet Angle Journal Size Notes 

*P5007360AB 9.025" 8.90" Siamese 4.220" 4 Bolt – Steel 48˚ 2.25" (3, 4, 5, 9) 

*P4876789AB 9.025" 8.90" Siamese 4.220" 4 Bolt – Aluminum 48˚ 318/340 (2, 3, 4, 7, 8) 

*P4876671AC 9.200" 8.90" Siamese 4.220" 4 Bolt – Iron 48˚ 318/340 (1, 10) 

*P4876791AC 9.200" 8.90" Siamese 4.220" 4 Bolt – Iron 59˚ 318/340 (6) 

*P4876672AC 9.200" 8.90" Non-siamese 4.080" 4 Bolt – Iron 48˚ 318/340 (1, 10) 

*P4876792AC 9.200" 8.90" Non-siamese 4.080" 4 Bolt – Iron 59˚ 318/340 (6) 

*P4876673AC 9.560" 9.30" Siamese 4.220" 4 Bolt – Iron 48˚ 318/340 (1, 10) 

*P4876793AC 9.560" 9.30" Siamese 4.220" 4 Bolt – Iron 59˚ 318/340 (6) 

*P4876674AC 9.560" 9.30" Non-siamese 4.080" 4 Bolt – Iron 48˚ 318/340 (1, 10) 

*P4876795AB 9.560" 9.30" Non-siamese 4.080" 2 Bolt – Iron 59˚ 318/340 (6) 

Notes: 

1. 48˚ cam tunnel machining requires cam bearings P4876372 and cam UGL P4876633 or P4876634. 

2. 48˚ roller cam tunnel machining requires 50 mm roller cam bearings P4876707 and cam UGL P4876719. 

3. Dry sump application only, requires external oil pump and filter. 

4. Lightening program removes all motor mounts, requires motor plate installation. 

5. Steel billet cap application: #1 – 2 bolt; #2 through #4 – 4-bolt wide register; #5 – 2 bolt ductile iron. 

6. 59˚ cam tunnel machining requires stock cam stepped bearings and standard cam. 

7. Aluminum cap application #1 and #5 – 2 bolt; #2 through #4 – 4 bolt wide register. 

8. Block machined for drag racing, requires lifter bore machining and 7/16" head bolts. 

9. 48˚ cam tunnel machining requires 60 mm cam bearings P5007361 and cam UGL P5007437. 

10. 48˚ tappet oil holes predrilled. 

11. No distributor. 

BLOCK/CAM BEARING/CAMSHAFT SELECTION CHART 

The proper cam and cam bearings for each block are listed below. 

Block Part Tappet Roller Bearing Babbitt Bearing Roller Tappet Mech. Tappet 

Number Description Angle Set — Cam Set — Cam Cam UGL Cam UGL 

N/A Production 318/340/360 Block 59° N/A *P5249710 Std “A” Std “A” 

*P4876381AB R3 Racing Block – NASCAR Truck 48° *P4876707 N/A *P4876719 N/A 

*P5007360AB R3 Racing Block – NASCAR Truck 48° *P5007361 N/A *P5007437 N/A 

*P4876671AC R3 Racing Block 48° N/A *P4876372 *P4876633 *P4876634 

*P4876791AC R3 Racing Block 59° N/A *P5249710 Std “A” Std “A” 






*P4876794AB R3 Racing Block 59° N/A *P5249710 Std “A” Std “A” 



*P5007151AC R4 Racing Block 45°int/ 59°ex *P5007361 N/A Custom Billet Custom Billet 

*P5007270AC R4 Racing Block 48° *P5007361 N/A *P5007437 N/A 

*P5007552 340 Replacement 59° N/A *P5249710 Std “A” Std “A” 

Note: For 4-cylinder Midget/Drag race blocks and UGL cams, see p. 28. 

INTAKE 

MANIFOLDS 

“A” ENGINE INTAKE MANIFOLD APPLICATION CHART (1967–1991) 

Engine Cyl. Head Perf. Level Carb. RPM Range Resto Drag Race Street Rod RV Truck Circle Track 

340-360 W2 14–11 sec. 4-bbl Dual Plane Idle–6000 P5249572 P5249572 P5249572 P5249572 P5249572 

318-340-360 W2 13–10 sec. 4-bbl Single Plane 2600–7000 — P4529460 P4529460 P4529460 P4529460 

Race — Al-9.20 Deck W2 — 4-bbl Single Plane 2800–7200 — P4876829AB — — P4876829AB 

Race — Al-9.20 Deck W7/W8/W9 — 4-bbl Single Plane 3600–8500 — P4532598 — — P4532598 

Race — Al-9.56 Deck W7/W8/W9 — 4-bbl Single Plane 3600–8500 — P4876162 — — P4876162 

56 







57

CYLINDER HEADS VALVES AND VALVE SPRINGS 

P5 CYLINDER HEADS 

Chamber Tappet Valve Valve Valve Int. Port Int. Flow Int. Port Exh. Port Valve Approx. 

Part Number Description Material Size Angle Angle Sizes Stem Size Volume at .600" Shape Shape Cover Weight 

*P5007509AB P5 Hemi Aluminum N/A 45° intake / 10° intake / N/A 5/16" N/A N/A Rect. Oval P5 P5 Hemi 36 

59° exhaust 2° exhaust 

Note: Use with P5007151 or partially machined block. 

SMALL BLOCK CYLINDER HEADS (FOR USE WITH “R” BLOCKS OR ALUMINUM BLOCKS WITH 48° TAPPET BORE) 

X-LONG STAGE VI/W7/W9 RACE 

Part Number Engine/Model Location Diameter Length Material Groove Modification 

*P4876580 X-long Intake 2.15" 5.40" Stainless 1 S 3/8" stem 




W2 CYLINDER HEADS 



*P5007445AB W2 cylinder head Cast iron 65 cc 48° 15° 2.02"/1.60" 3/8" 190 cc 265 cfm Oval W2 “D” W2/5 Std 5 bolt 51 

*P5007708AB W2 cylinder head Cast iron 47 cc 48° 15° 2.02"/1.60" 3/8" 190 cc 265 cfm Oval W2 “D” W2/5 Std 5 bolt 51 




*P4876281 NASCAR W8 ptly. mach. Aluminum 63 cc 48° 15° N/A N/A N/A N/A Rect. W8/9 “D” W8 W8 only 35 

*P4876783 Drag Race W8 ptly. mach Aluminum 63 cc 48° 15° N/A N/A N/A N/A Rect. W8/9 “D” W8 W8 only 35 




*P5007066 W9 partially machined Aluminum 52 cc 48° 15° N/A N/A 200 cc N/A Rect. W8/9 “D” W7/9 Std 5 bolt 22 

*P5007065AB W9 cylinder head Aluminum 52 cc 48° 15° 2.15"/1.625" 11/32" 200 cc 290 cfm Rect. W8/9 “D” W7/9 Std 5 bolt 22 

*P5007179AB W9 cylinder head Aluminum 52 cc 48° 15° 2.15"/1.625" 3/8" 200 cc 290 cfm Rect. W8/9 “D” W7/9 Std 5 bolt 22 

*P5007855 W9 partially machined Aluminum 52 cc 48° 15° N/A N/A N/A N/A Rect. W8/9 “D” W7/9 Std 5 bolt 22 

*P5007861 W9 partially machined Aluminum 52 cc 48° 13° N/A N/A N/A N/A Rect. W8/9 “D” W7/9 Std 5 bolt 22 

W9 RAISED PORT HEADS 



*P5007904 W9 partially machined Aluminum N/A 48° 13° N/A N/A N/A N/A N/A N/A Std 5 bolt N/A 

*P5007952 W9 partially machined Aluminum N/A 48° 13° N/A N/A N/A N/A N/A N/A Std 5 bolt N/A 

SMALL BLOCK CYLINDER HEADS (FOR USE WITH PRODUCTION BLOCKS OR “R” BLOCKS WITH 59° TAPPET BORE) 


*P5249886 X-long Exhaust 1.60" 5.40" Stainless 1 S 3/8" stem 





*P4876579 X-long Intake 2.18" 5.40" Stainless 1 S 5/16" stem, tulip 



Notes: Use 3/8" stem with W7 heads P4876043 and 044, and W9 heads P5007179. 

Groove design: 1 S = one square groove. 

VALVE SPRINGS/RETAINERS 

Part Number Inst. Ht. Description O.D. Wire Dia. Lift Range Material Retainer 

*P5249464 1.64" Single/damper 1.42" .187" .400"/.525" Chrome silicon P4452032 

*P2806077 1.83"/1.86" Dual/damper 1.52" .215" .500"/.610" Chrome vanadium P4529823/P4007178 

*P5249864 2.00"/2.02" Single/damper 1.55" .216" .460"/.550" Chrome silicon P4452033/P4286573 

*P5249848 1.86"/1.87" Single/damper 1.55" .216" .480"/.540" Chrome silicon P4452033/P4286573/P4007178 

*P4876064 1.86"/1.88" Dual/damper 1.60" .216" .590"/.640" Chrome silicon P4286573/P4007178 

*P5249849 2.00"/2.02" Dual/damper 1.55" .216" .650"/.750" Chrome silicon P4286573/P4007178/P4120785 

*P3690933 1.83"/1.86" Single/damper 1.53" .224" .440"/.500" Chrome vanadium P4452033/P4286573 

58 




*P5249769 W2 cylinder head Cast Iron 65 cc 59° 18° 2.02"/1.60" 3/8" 180 cc 260 cfm Oval W2 “D” W2/W5 Std 5 bolt 51 

*P5007355 W2 cylinder head Cast Iron 68 cc 59° 18° 2.02"/1.60" 3/8" 189 cc 260 cfm Oval W2 “D” W2/W5 Std 5 bolt 51 

“LATE 360” CYLINDER HEADS 

*P5007086 “Late 360” Cast Iron 60 cc 59° 18° 1.92"/1.625" 8 mm 153 cc 190 cfm Rect. Std 10 bolt 54 

*P5007145 “Late 360” R/T Cast Iron 60 cc 59° 18° 1.92"/1.625" 8 mm 180 cc 229 cfm Rect. Std 10 bolt 57 

*P4876624 “Late 360” Aluminum 53 cc 59° 18° 1.92"/1.625" 8 mm 177cc 222 cfm Rect. Std 10 bolt 25 

NASCAR TOURING SERIES HEAD 

*P5007928 BrodixNTS — Aluminum 67 cc 59° 18° 2.15"/1.60" 11/32" N/A N/A Rect. W5 “D” Unique N/A 

unmachined 



*P2946353 1.99"/2.00" Dual/damper 1.59" .224" .520"/.700" Special P4286573/P4007178/P4120785 

*P4007536 2.00"/2.02" Triple 1.62" .225" .640"/.745" Chrome silicon P4120783/P4286775 

Notes: 

1. All valve springs are sold individually. 

2. On W7 heads and others with X-long valves, like the 5.40" length, the typical installed spring height is 2.00" so only the springs listed above for the 

1.99" thru 2.02" installed heights can be used. 

3. With a single spring, the damper is installed inside the main spring; with a dual spring, the damper is installed between the inner and outer springs. 

There is no damper in the triple springs. 

4. Retainers — Those listed are the basic recommendation. Check the actual retainer listing for other options — added installed height, materials, lock size. 




59

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