2011 - Crane Cams
2011 - Crane Cams
2011 - Crane Cams
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CAMSHAFTS<br />
Pontiac V-8 55-81<br />
278<br />
Application<br />
Hydraulic Lifter <strong>Cams</strong>hafts<br />
Good mid to upper RPM torque and HP, 455+ with aluminum<br />
heads, fair idle, performance usage, bracket racing,<br />
auto trans w/3000+ converter, 3800-4200 cruise<br />
RPM, 10.0 to 11.5 compression ratio advised.<br />
Good upper RPM torque and HP, rough idle, bracket racing,<br />
auto trans w/3500+ converter, 10.5 to 12.0 compression<br />
ratio advised.<br />
Good upper RPM HP, rough idle, performance usage,<br />
bracket racing, auto trans w/3500+ converter, 10.5 to<br />
12.0 compression ratio advised. Good w/manifold nitrous<br />
system.<br />
Moderate competition only, good upper RPM HP, bracket<br />
racing, auto trans w/4000+ converter, 12.0 minimum<br />
compression ratio advised.<br />
<strong>Cams</strong>haft Series/<br />
Grind Number<br />
RPM<br />
POWER<br />
RANGE<br />
H-296-2 2800-<br />
6600<br />
H-244/3387-2-8 3400-<br />
6800<br />
H-308-2 3400-<br />
7000<br />
H-260/360-2S-8 3800-<br />
7200<br />
Hydraulic Roller <strong>Cams</strong>hafts — Retrofit<br />
Excellent low end torque, good idle, daily usage, towing,<br />
performance and fuel efficiency, 2600-3000 cruise RPM,<br />
8.75 to 10.5 compression ratio advised. Also mild turbocharged.<br />
Good low end and mid range torque and HP, fair idle,<br />
moderate performance usage, mild bracket racing, auto<br />
trans w/2500+ converter, 3000-3400 cruise RPM, 9.5 to<br />
10.75 compression ratio advised.<br />
Good mid range torque and HP, fair idle, performance<br />
usage, mild bracket racing, auto trans w/2800+ converter,<br />
3200-3600 cruise RPM, best in 389+ cu.in., 10.0 to<br />
11.0 compression ratio advised.<br />
Good mid range torque and HP, fair idle, performance<br />
usage, mild bracket racing, auto trans w/3000+ converter,<br />
3600-4200 cruise RPM, best in 400+ cu,in., 10.0 to<br />
11.5 compression ratio advised.<br />
Good mid range and upper RPM torque and HP, fair idle,<br />
performance usage, bracket racing, auto trans w/3200+<br />
converter, 4000-4600 cruise RPM, best in 455+ cu.in.,<br />
10.0 to 11.5 compression ratio advised.<br />
Good mid range and upper RPM torque and HP, rough<br />
idle, performance usage, bracket racing, auto trans<br />
w/3500+ converter, 4200-5000 cruise RPM, best in<br />
455+ cu.in., 10.5 to 12.0 compression ratio advised.<br />
RPM range shown is for average usage. These cam profiles<br />
will RPM higher, depending upon application.<br />
IMPORTANT: Adjustable Vacuum Advance Kit available. See page<br />
333 for details.<br />
HR-214/325-2S-12 IG 1400-<br />
5600<br />
HR-222/339-2S-12 IG 1800-<br />
6000<br />
HR-226/345-2S1-12 IG 2000-<br />
6200<br />
HR-230/352-2S1-14 IG 2200-<br />
6400<br />
HR-238/365-2S1-14 IG 2600-<br />
6600<br />
HR-242/372-2-14 IG 3000-<br />
6800<br />
<strong>Cams</strong>haft<br />
PARTNUMBER/<br />
EmissionsCode<br />
CRANECAMS.COM<br />
265 (4.3L)-287-301 (4.9L)-316-326-347-350-<br />
370-389-400 (6.6L)-421-428-455 cu.in.<br />
See pg. 293<br />
LIFTERS<br />
COMPLETE CAM SPECIFICATIONS<br />
Degrees<br />
Duration<br />
@ .050”<br />
Int/Exh.<br />
Advertised<br />
Degrees<br />
Duration<br />
Int/Exh.<br />
Degrees<br />
Lobe<br />
Separation<br />
Open/Close<br />
@ .050”<br />
Cam Lift<br />
Int/Exh<br />
Lash<br />
Hot<br />
Int.<br />
Exh.<br />
Gross<br />
Lift<br />
Int.<br />
Exh.<br />
284281 * 99282-16 b 234 296 112 10 44 .000 .473<br />
99382-16 *c 242 304 58 4 .000 .488<br />
3<br />
280451 * 99282-16b 244 314 108 19 45 .000 .508<br />
99382-16 *c 254 324 60 14 .000 .532<br />
3<br />
284571 * 99282-16 b 246 308 114 14 52 .000 .495<br />
99382-16 *c 254 316 66 8 .000 .510<br />
3<br />
280601 * 99282-16 b 260 330 108 24 56 .000 .540<br />
99382-16 *c 268 338 64 24 .000 .558<br />
3<br />
289611 *a 28532-16 d 214 276 112 0 34 .000 .488<br />
222 284 48 (6) .000 .509<br />
3<br />
289621 *a 28532-16 d 222 284 112 4 38 .000 .509<br />
230 292 52 (2) .000 .528<br />
3<br />
289661 *a 28532-16d 226 288 112 6 40 .000 .518<br />
234 296 54 0 .000 .539<br />
3<br />
289631 *a 28532-16 d 230 292 114 6 44 .000 .528<br />
238 300 58 0 .000 .548<br />
3<br />
289651 *a 28532-16 d 238 300 114 10 48 .000 .548<br />
246 308 62 4 .000 .558<br />
3<br />
289641 *a 28532-16 d 242 304 114 12 50 .000 .558<br />
252 314 65 7 .000 .558<br />
3<br />
NOTE: To provide the most accurate adjustment on hydraulic lifter<br />
and hydraulic roller camshafts, a set of positive locking<br />
nuts, such as 99768-16, must be obtained for the rocker<br />
arm studs.<br />
NOTE: Specify if casting number 540306, 544127, or 9771980<br />
heads with 1.65 ratio rocker arms are being used, as different<br />
valve springs will be required.<br />
NOTE: Be sure to maintain at least .040” clearance between the<br />
underside of the rocker arm and valve spring retainer when<br />
the valve is closed.<br />
Since 1975 General Motors divisions have exchanged engines<br />
throughout different models. Be certain of exactly which<br />
engine you have before ordering.
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