2011 - Crane Cams

CAMSHAFTS
American Motors/Jeep 6 Cylinder 64-05
40
Application
Hydraulic Lifter Camshafts
Brute low-end torque, smooth idle, daily usage, fuel
economy, fuel injection compatible, 1600-2200 cruise
RPM, 7.75 to 8.75 compression ratio advised.
Good low-end torque, smooth idle, daily usage, fuel
economy, fuel injection compatible, off road, towing,
also mild turbocharged, 2200-2600 cruise RPM, 8.0 to
9.5 compression ratio advised.
Good low and midrange torque, good idle, daily usage
and off road, towing, performance and fuel efficiency,
2600-3000 cruise RPM, 8.75 to 10.5 compression ratio
advised.
Performance usage, good mid and upper RPM HP, serious
off road, limited oval track, 10.25 to 11.75 compression
ratio advised.
Mechanical Lifter Camshafts
Good low-end torque, good idle, daily performance
usage, good low and mid-range HP, 3200-3600 cruise
RPM, 9.5 to 10.75 compression ratio advised.
Good mid range torque and HP, fair idle, moderate performance
usage, serious off-road usage, mild bracket
racing, auto trans w/2500+ converter, 3400-3800
cruise RPM, 9.5 to 11.0 compression ratio advised.
Good w/plate nitrous system.
Camshaft Series/
Grind Number
RPM range shown is for average usage. These cam profiles
will RPM higher, depending upon application.
IMPORTANT NOTE: The 1999-05 4.0 litre engines have a camshaft
with a different nose configuration. Our camshafts listed
above can be used in these engines if the following factory
parts are used: 53020443 gear, 53020444 chain, 53020445
gear, and 83502890 bolt kit.
NOTE: To provide the most accurate valve adjustment on hydraulic
lifter camshafts for 1964-early 1972 engines, special length
pushrods can be ordered. Refer to page 305 for special
RPM
POWER
RANGE
H-192/2667-2S-10 800-
4200
H-260-2 1200-
4800
H-272-2 1800-
5400
H-222/3200-2-8 2600-
6200
F-228/3334-2-12 2200-
6000
F-238/3467-2-8 2800-
6600
Camshaft
PART NUMBER/
Emissions Code
See pg. 293
LIFTERS
CRANECAMS.COM
199-232-243 (4.0L)
258 (4.2L) 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.
750501 *a 99278-12 192 248 110 (9) 21 .000 .427
204 260 37 (13) .000 .456
3
753901 *a 99278-12 204 260 112 (5) 29 .000 .456
216 272 45 (9) .000 .484
3
753941 *a 99278-12 216 272 112 1 35 .000 .484
228 284 51 (3) .000 .512
3
750591 *a 99278-12 222 294 108 8 34 .000 .512
232 304 49 3 .000 .538
3
751101 *a 99260-12 228 264 112 7 41 .028 .533
238 274 56 2 .030 .555
3
751121 *a 99260-12 238 264 108 16 42 .028 .555
248 274 57 11 .030 .576
3
pushrod ordering instructions and page 374 for checking
your hydraulic lifter preload. For late 1972-1998 engines, the
rocker stands can be shimmed or longer pushrods installed
to provide the proper hydraulic lifter preload. For mechanical
camshafts in late 1972-05 engines, screw-in rocker arm
studs and pushrod guideplates must be installed to effect
valve adjustment. Special order heat treated pushrods are
required for use with guideplates.
IMPORTANT: For late 1972-05 engines, if your preload is
excessive, this can be remedied by using Crane’s
Rocker Arm Bridge Shim Kit (99179-1). Refer to page
324 for details.
NOTE: 1974 American Motors/Jeep 232 and 258 cu.in. engines
were equipped with exhaust valve rotators and 11/32” stem
exhaust valves. In these instances use 3 of 99936-2 valve
spring retainers and 3 of 99820-2 valve seals (on exhaust
valves only) to prevent excessive valve spring shimming.
NOTE: 1987-05 American Motors/Jeep 4.0 litre engines are
equipped with 5/16” stem valves, requiring appropriate
retainers and valve stem seals as indicated.