HYDRAULIC CAMSHAFTS - Crower

HYDRAULIC ROLLER CAMSHAFTS
1965-1996
366 396 402 427 454 502 & Rodeck V8 Big Block
Note: These cams use .000" intake and exhaust valve lash.
Chevrolet
C.I.D.
Group
Low
RPM
RPM Range
Peak Peak
Torque HP
Top
RPM
396 cid 2050 3250 4500 5000
402 cid 2050 3250 4500 5000
427 cid 1900 3150 4400 4900
454 cid 1750 2875 4125 4500
502 cid 1700 2750 3950 4250
Part
Number
01400
Early model
01400LM
LM is step
nose
Lobe
Center
205HR213
112°
Advertised
Duration
Intake Exhaust
264° 272°
X-TREME MILEAGE CAMS AVAIL ABLE!
CONTACT CROWER TECHNICIANS FOR MORE INFO.
Duration
@ .050"
Intake Exhaust
205° 213°
Duration
@ .200"
Intake Exhaust
110° 120°
Gross Lift
1.7 / 1.7
Intake Exhaust
.488" .512"
Suitable
Component
Kit
84579
or
84551LM
396 cid 2250 3450 5000 5500
402 cid 2250 3450 5000 5500
427 cid 2150 3345 4900 5400
454 cid 1950 3145 4700 5200
502 cid 1850 3045 4600 5100
01401
Early model
01401LM
LM is step
nose
213HR222
112°
276°
282°
213°
222°
120°
128°
.512"
.540"
84579
or
84551LM
396 cid 2500 3700 5300 5800
402 cid 2500 3700 5300 5800
427 cid 2400 3600 5200 5700
454 cid 2300 3400 5000 5500
502 cid 2200 3300 4900 5400
01402
Early model
01402LM
LM is step
nose
222HR229
110°
278°
286°
222°
229°
128°
137°
.540"
.563"
84579
or
84551LM
396 cid 2750 3950 5550 6050
402 cid 2750 3950 5550 6050
427 cid 2650 3850 5450 5950
454 cid 2450 3650 5250 5750
502 cid 2330 3520 5100 5650
01403
Early model
01403LM
LM is step
nose
229HR237
110°
287°
296°
229°
237°
137°
145°
.563"
.586"
84579
or
84551LM
Note: The above cams are ground on cast steel cores. Crower recommends using the factory stock cast iron
distributor gear. If 8620 steel billet core with integral cast iron gear is desired, specify part number 00050.
Note: The RPM power ranges listed above are approximations, your RPM ranges may vary depending on
engine setup (cylinder head flow, etc.). “LM” cores fit 454-502 cid 1994-up only (w/step nose).
Gen VI camshafts are different and require 8620 steel billet core with cast iron gear (#00050).
ENGINEERED COMPONENT KITS
Part No.
84551
84551LM
Lifters Springs Retainers Plug Pushrods
66321-16
66331-16
68340-16
68340-16
87063M-16
87063M-16
86086
71755-8 & 71855-8
71760-8 & 71860-8
Remarks
For 9.800" deck.
For Late Model block.
Spring pressure:
68340-16 Seat: 1.900" @ 119 lbs / Nose: 1.350" @ 359 lbs / Coil bind: 1.080" ( Machine work, use cutter 68986).
Note: If running a tall deck block use .400" longer pushrods. Other lengths available on a special order basis.
Note: If engine is equipped with exhaust valve rotators see rotation eliminator cups (part # 68958-8).
Note: For proper oiling on 1965 and 1966 engines, rear cam bearing must be grooved. Specify when
ordering cam.
Note: Two-gear drives and reverse engine rotation camshafts are available on a special order basis.
CAUTION! When using high lift cams pay close attention to retainer, oil seal and valve guide clearance at full
lift (minimum .050").
CAUTION! For sustained running at high rpm use valve spring (68385X2-16).
Valve timing events are available online at: www.crower.com/valvtime.html
ACCESSORIES
Part No.
See pg. 180
Pg's.150-165
Pg's.150-165
See pg.138
Description
Spring seat cutter
Rocker arms (1.7) 7⁄16
Rocker arms (1.8) 7⁄16
Timing gear kit
IMPORTANT! Stock big block
Chevrolet single springs are designed for cams with approximately .400" lift. When
stock valve springs are used with performance cams over .400" lift, coil bind and
retainer to valve guide interference may occur.
Note: If using longer than stock valves you may require spring and retainer
modifications. See specs or contact Crower.
Note: Rocker arms available in Aluminum &
Stainless steel.
For technical support call 619-661-6477 • Some products listed are not legal for sale or use on emission controlled motor vehicles
• RPM ranges vary upon application • www.crower.com
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