2011 - Crane Cams

CAMSHAFTS
Chrysler-Dodge-Plymouth “LA” V-8 64-87
162
Application
Mechanical Roller Camshafts
Good low end and mid range torque and HP, fair idle,
moderate performance usage, mild bracket racing,
auto trans w/2500+ converter, 3400-3800 cruise RPM,
10.5 to 11.5 compression ratio advised.
Good mid to upper RPM torque & HP, fair idle, moderate
performance usage, mild bracket racing, good w/plate
nitrous system, auto trans w/3000+ converter, 3800-
4200 cruise RPM, 10.5 to 12.0 compression ratio advised.
Good w/Roots supercharger, 14 lbs. maximum boost
w/8.0 maximum compression ratio advised.
Competition only, bracket racing, heavy car, good w/
manifold nitrous system, 360+ cu.in., auto trans w/race
converter, aftermarket aluminum cylinder heads
required, 12.0 to 13.0 compression ratio advised.
Good mid range torque and HP, rough idle, performance
usage, oval track, bracket racing, auto trans w/
race converter, 11.5 to 12.5 compression ratio advised.
Competition only, good mid to upper RPM HP, oval track,
bracket racing, auto trans w/race converter, 12.5 minimum
compression ratio advised.
Competition only, good upper RPM HP, bracket racing,
auto trans w/race converter, 12.5 minimum compression
ratio advised.
Competition only, good upper RPM torque and HP,
bracket racing, Super Pro, Super Gas, auto trans w/race
converter, aftermarket aluminum cylinder heads
required, 13.0 minimum compression ratio advised.
Competition only, good upper RPM HP, bracket racing,
auto trans w/race converter, nitrous, 12.5 minimum
compression ratio advised.
Competition only, bracket racing, good upper RPM HP,
Super Quick, Super Comp, etc.,manual trans or auto
w/trans brake, aftermarket aluminum cylinder heads
required, 13.0 minimum compression ratio advised.
Competition only, Super Stock or Competition elim.,
manual trans or auto w/trans brake, 13.5 minimum
compression ratio advised.
Camshaft Series/
Grind Number
RPM range shown is for average usage. These cam profiles
will RPM higher, depending upon application.
NOTE: 8620 steel billet roller camshafts for Chrysler R series
cylinder blocks with 50mm, 2.000”, and 60mm diameter
camshaft bearing journals, and 45, 47, or 48 degree lifter
bore bank angles are available on special order. Lightweight,
gun drilled rear drive camshafts are also an option. Appropriate
oil conducting roller lifters are also available. Contact
RPM
POWER
RANGE
SR-238/350-2S-12 IG 2800-
6600
SR-246/362-2S-12 IG 3200-
7000
R-256/452-2S-10 3800-
7800
R-260/420-2S-8 3800-
7600
R-268/420-2S1-8 4000-
7800
R-272/420-2-8 4200-
8000
R-274/482-2S-8 4200-
8200
R-276/420-2-10 4400-
8200
R-280/452-2S-8 5000-
8600
R-284/4765-2S-8 5200-
9000
Camshaft
PART NUMBER/
Emissions Code
See pg. 296
LIFTERS
CRANECAMS.COM
273-340-360 (5.9L) and
67-86 318 (5.2L) cu.in
COMPLETE CAM SPECIFICATIONS
Degrees
Duration
@ .050”
Int/Exh.
Advertised
Degrees
Duration
Int/Exh.
Degrees
Lobe
Separation
Open/Close
@ .050”
Cam Lift
Int/Exh
Lash
Hot
Int.
Exh.
Gross
Lift
Int.
Exh.
698521 *a 69515-16 238 288 112 12 46 .020 .525
69542-16 c 246 296 60 6 .020 .543
3
698531 *a 69515-16 246 283 112 15 49 .020 .543
69542-16 c 254 290 63 9 .020 .561
3
698271 *b 69542-16 c 256 285 110 23 53 .020 .746
268 297 69 19 .022 .746
3
698801 * b 69515-16 260 292 108 26 54 .020 .630
69542-16c 266 298 65 21 .020 .630
3
698821 * b 69515-16 268 300 108 30 58 .020 .630
69542-16 c 276 308 70 26 .020 .630
3
698831 * b 69515-16 272 304 108 32 60 .020 .630
69542-16 c 282 314 72 29 .020 .630
3
698281 * b 69542-16 c 274 318 108 30 64 .016 .723
278 334 72 26 .030 .735
3
698841 * b 69515-16 276 308 110 32 64 .020 .630
69542-16 c 286 318 77 29 .020 .630
3
698291 * b 69542-16 c 280 309 108 37 63 .020 .678
288 317 77 31 .022 .678
3
698611 *b 69542-16 c 284 318 108 39 65 .035 .715
292 326 79 33 .030 .688
3
Crane’s Performance Consultants for details.
IMPORTANT NOTE: Roller lifter camshafts are not intended for use
in R blocks having 59 degree bank angle lifter bores. Contact
Crane’s Performance Consultants for details.
NOTE: Early 1986-91 318 (5.2L) and early 1987-91 360 (5.9L)
engines are equipped with hydraulic roller camshafts and
lifters. Conventional hydraulic,mechanical, or roller camshafts
and lifters can be installed in these engines, providing
the appropriate kit components are used.
NOTE: To effect valve adjustment, 318, 340 and 360 engines
require the use of Crane Adjustable Rocker Arms and appropriate
pushrods when using roller lifter cams.