2011 - Crane Cams

CAMSHAFTS
Oldsmobile V-8 67-84
274
Application
Camshaft Series/
Grind Number
Hydraulic Roller Camshafts — Retrofit
Excellent low end torque, good idle, daily usage, towing,
performance and fuel efficiency, 2600-3000 cruise RPM,
8.75 to 10.5 compression ratio advised.
Good low end and mid range torque and HP, fair idle,
moderate performance usage, mild bracket racing, auto
trans w/2500+ converter, 3000-3600 cruise RPM, 9.5 to
10.75 compression ratio advised.
Good mid range torque and HP, fair idle, performance
usage, best in 400+ cu.in., mild bracket racing, auto
trans w/3000+ converter, good w/plate nitrous system,
3600-4200 cruise RPM, 10.0 to 11.5 compression ratio
advised.
Good mid range and upper RPM torque and HP, rough
idle, performance usage, bracket racing, best in 455+
cu.in., auto trans w/3500+ converter, good w/manifold
nitrous system, 4200-5000 cruise RPM, good with aluminum
heads, 10.5 to 12.0 compression ratio advised.
Mechanical Lifter Camshafts
Good low and mid range torque and HP, fair idle, moderate
performance usage, bracket racing, auto trans
w/2000+ converter, 3400-3800 cruise RPM, 10.0 to 11.5
compression ratio advised.
Good mid range torque and HP, rough idle, moderate
performance usage, bracket racing, best in 400+ cu.in.,
auto trans w/2500+ converter, 3800-4200 cruise RPM,
11.0 to 12.0 compression ratio advised.
Mechanical Roller Camshafts
Good mid range torque and HP, rough idle, performance
usage, good low and mid range torque and HP, bracket
racing, auto trans w/race converter, 11.0 to 12.5 compression
ratio advised.
Good mid to upper RPM torque and HP, rough idle, performance
usage, bracket racing, auto trans w/race converter,
good w/plate nitrous system, 11.5 minimum
compression ratio advised.
Good upper RPM torque and HP, competition only, good
mid to upper RPM torque and HP, bracket racing, auto
trans w/race converter, good w/manifold nitrous system.
12.5 minimum compression ratio advised.
Competition only, good upper RPM HP, Super Stock, stick
shift or auto w/trans brake, 12.5 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.
RPM
POWER
RANGE
HR-214/325-2S-12 IG 1400-
5600
HR-222/339-2S-12 IG 1800-
6000
HR-230/352-2S-14 IG 2200-
6400
HR-242/372-2S-14 IG 3000-
6800
F-238/3200-2-10 2800-
6600
F-248/3334-2-8 3600-
7400
R-252/420-2-8 3200-
7400
R-262/420-2-10 3600-
7600
R-272/420-2-10 4200-
8200
R-282/450-2S2-8 5000-
8800
260-307 (5.0L)-350 (5.7L)-400-403-425-455 cu.in.
– 39º bank angle engines
Camshaft
PARTNUMBER/
EmissionsCode
See pg. 294
LIFTERS
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.
809611 *a 28532-16 c 214 276 112 0 34 .000 .520
222 284 48 (6) .000 .542
3
809621 *a 28532-16 c 222 284 112 4 38 .000 .542
230 292 52 (2) .000 .563
3
809631 *a 28532-16 c 230 292 114 6 44 .000 .563
242 304 60 2 .000 .595
3
809641 *a 28532-16 c 242 304 114 12 50 .000 .595
254 316 66 8 .000 .595
3
801181 * 99250-16 d 238 300 110 14 44 .022 .512
248 310 58 9 .022 .533
3
801231 * 99250-16 d 248 310 108 21 47 .022 .533
258 320 62 16 .022 .555
3
808801 *b 28570-16 e 252 284 108 22 50 .020 .672
262 294 63 19 .020 .672
3
808811 *b 28570-16 e 262 294 110 25 57 .020 .672
272 304 70 22 .020 .672
3
808821 *b 28570-16 e 272 304 110 30 62 .020 .672
282 314 75 27 .020 .672
3
808351 *b 28570-16 e 282 322 108 36 66 .026 .720
292 332 77 35 .026 .681
NOTE: The proper Crane pushrods should be used with Crane lifters
to provide the most accurate valve adjustment. Refer to the
chart on page 270 for the correct cam, lifter and pushrod
applications.
NOTE: For hydraulic roller, mechanical lifter, and roller lifter
camshaft applications, it is highly recommended that the
cylinder heads be machined for 99157-16 7/16” screw-in
studs and pushrod guideplates, to provide a means of
effecting valve adjustment. Custom length heat treated
pushrods will then be required. Refer to page 305 for
special pushrod ordering instructions.
3
NOTE: 1985-1990 307 cu.in. engines are 39º bank angle and are
equipped with hydraulic roller camshafts and tappets.
Tappet diameter is .921”. Conventional hydraulic, hydraulic
roller, 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. Bushing the
lifter bores to .842” diameter would also be required.
Since 1975 General Motors divisions have exchanged
engines throughout different models. Be certain of exactly
which engine you have before ordering.