2011 - Crane Cams

CAMSHAFTS
Oldsmobile V-8 67-84
272
Application
Hydraulic Lifter Camshafts
Brute low end torque, smooth idle, daily usage, fuel
economy, 1600-2200 cruise RPM, 7.75 to 8.75 compression
ratio advised.
Good low end torque, smooth idle, daily usage, off road,
towing, economy, also mild turbocharged, 2200-2600
cruise RPM, 8.0 to 9.5 compression ratio advised.
Good low and mid range torque, good idle, daily usage,
off road, towing, mild marine, performance and fuel efficiency,
2600-3000 cruise RPM, 8.75 to 10.5 compression
ratio advised.
Good mid range torque and HP, fair idle, moderate performance
usage, marine perf, bracket racing, auto trans
w/2500+ converter, 3200-3600 cruise RPM, 9.5 to 11.0
compression ratio advised.
Good mid range HP, fair idle, moderate performance
usage, bracket racing, auto trans w/3000+ converter,
3600-4000 cruise RPM, 10.0 to 11.5 compression ratio
advised.
Replacement for factory W-31 camshaft (advancing this
camshaft 5 degrees will produce the equivalent specs of
the 397328 W-30 camshaft).
Good mid and upper RPM torque and HP, fair idle, performance
usage, best in 425+ cu.in., bracket racing, auto
trans w/3500+ converter, 10.5 to 12.0 compression ratio
advised.
Good mid and upper RPM torque and HP, rough idle, performance
usage, best in 455+ cu.in., bracket racing, auto
trans w/3500+ converter, 10.5 to 12.0 compression ratio
advised.
Good mid and upper RPM torque and HP, rough idle, performance
usage, best in 455+ cu.in. with aluminum
heads, bracket racing, auto trans w/3500+ converter,
11.0 to 12.5 compression ratio advised.
Good upper RPM and HP, rough idle, performance usage,
best in 455+ cu.in. with aluminum heads, bracket racing,
auto trans w/3800+ converter, 11.5 minimum compression
ratio advised.
RPM range shown is for average usage. These cam profiles
will RPM higher, depending upon application.
IMPORTANT: Adjustable Vacuum Advance Kit available. See page
333 for details.
NOTE: Refer to the chart on page 270 to determine which bank
angle engine you have.
NOTE: Camshafts for the 45º bank angle engines (79-prefix) are
available on special order.
Camshaft Series/
Grind Number
RPM
POWER
RANGE
H-192/2667-2S-10 800-
4200
H-260-2 1200-
4800
H-272-2 1600-
5400
H-284-2 2200-
5800
H-292-2 2800-
6400
402194 2600-
6000
H-234/325-2-10 2800-
6400
H-238/3347-2-10 3000-
6600
H-244/3439-2S-10 3200-
6800
H-248/3500-2S-12 3400-
6800
260-307 (5.0L)-350 (5.7L)-400-403-425-455 cu.in.
– 39º bank angle engines
Camshaft
PARTNUMBER/
EmissionsCode
See pg. 293
LIFTERS
Much confusion has arisen from ordering the wrong cam, lifters and pushrods fro the
64-84 Olds engines. See the chart on page 270 for IMPORTANT INFORMATION.
CRANECAMS.COM
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.
800501 * 99284-16 b 192 248 110 (9) 21 .000 .427
204 260 37 (13) .000 .456
3
803901 * 99284-16 b 204 260 112 (5) 29 .000 .456
803902 *a 216 272 45 (9) .000 .484
3
804541 * 99284-16 b 216 272 112 1 35 .000 .484
804542 *a 228 284 51 (3) .000 .512
3
804551 * 99284-16 b 222 284 110 6 36 .000 .480
804552 *a 99384-16 *c 230 292 50 0 .000 .496
3
804461 * 99284-16 b 230 292 110 10 40 .000 .496
99384-16 *c 234 296 52 2 .000 .504
3
800101 99284-16 b 232 300 113.5 3 49 .000 .474
99384-16 *c 232 300 49 3 .000 .474
1
800601 * 99284-16 b 234 304 110 12 42 .000 .520
99384-16 *c 244 314 57 7 .000 .542
3
800661 * 99284-16 b 238 294 110 14 44 .000 .536
99384-16 *c 248 304 59 9 .000 .560
3
800741 * 99284-16 b 244 300 110 17 47 .000 .550
99384-16 *c 256 312 63 13 .000 .560
3
800681 * 99284-16 b 248 304 112 17 51 .000 .560
99384-16 *c 256 312 65 11 .000 .560
3
IMPORTANT: Check your hydraulic lifter preload, with your
original pushrods, to first determine if different
pushrods may be required. Refer to page 374 for the
fast and easy way to check hydraulic lifter preload. If
your hydraulic lifter preload is excessive, this can be
easily remedied by using Crane’s Rocker Arm Bridge
Shim Kit (99179-1). Refer to page 324 for details.
NOTE: 1985-1990 307 cu.in. engines are 39º bank angle and are
equipped with hydraulic roller camshafts and lifters. Lifter
diameter is .921”. Conventional hydraulic, mechanical,
or roller camshafts and lifters can be installed in these
engines if a thrust spacer is fabricated and the appropriate
kit components are used.
Since 1975 General Motors divisions have exchanged engines
throughout different models. Be certain of exactly which
engine you have before ordering.