2011 - Crane Cams
2011 - Crane Cams
2011 - Crane Cams
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CAMSHAFTS<br />
Chevrolet V-8 67-95<br />
134<br />
Application<br />
Mechanical Roller <strong>Cams</strong>hafts<br />
Performance usage, good upper RPM torque and HP,<br />
radical marine performance, bracket racing, auto trans<br />
w/race converter, 12.0 min. compression ratio advised.<br />
Performance usage, bracket racing, good mid range<br />
torque and HP, Heavy, Pro, etc., auto trans w/race converter,<br />
12.0 minimum compression ratio advised.<br />
Good upper RPM HP, rough idle, performance usage,<br />
marine performance, bracket racing, auto trans<br />
w/4000+ converter, 4400-4800 cruise RPM, 11.5 minimum<br />
compression ratio advised, 540+ cu.in. Good w/<br />
large manifold nitrous system. Good w/large Roots<br />
supercharger, 22 lbs. maximum boost w/8.0 maximum<br />
compression ratio advised.<br />
Performance usage, good mid range torque and HP,<br />
480+ cu.in., bracket racing, auto trans w/4000+ converter,<br />
11.5 minimum compression ratio advised.<br />
Good w/large manifold nitrous system. Good w/large<br />
Roots supercharger, 20 lbs. maximum boost w/8.0<br />
maximum compression ratio advised.<br />
Performance usage, bracket racing, w/heavy car, good<br />
mid range torque and HP, Pro, Super Pro, oval track,<br />
Modified, etc., auto trans w/race converter, 12.0 minimum<br />
compression ratio advised.<br />
Performance usage, bracket racing, good mid to upper<br />
RPM torque and HP, Pro, Super Pro, etc., auto trans w/<br />
race converter, oval track, Modified, etc., 12.0 minimum<br />
compression ratio advised.<br />
Performance usage, bracket racing w/heavy car, good<br />
mid to upper RPM torque and HP, Pro, Super Pro, etc.,<br />
auto trans w/race converter, oval track, Modified, etc.,<br />
12.0 minimum compression ratio advised.<br />
Competition only, good upper RPM HP, 480+ cu.in.,<br />
bracket racing, auto trans w/race converter, good w/<br />
large manifold nitrous system, 12.5 minimum compression<br />
ratio advised. Good w/large Roots supercharger,<br />
22 lbs. maximum boost w/8.0 maximum<br />
compression ratio advised.<br />
Performance usage, bracket racing, good mid to upper<br />
RPM torque and HP, Super Pro, etc., auto trans w/race<br />
converter, oval track, Super Modified, 12.5 minimum<br />
compression ratio advised.<br />
Competition only, bracket racing, good upper RPM<br />
torque and HP, Super Pro, Super Gas, Super Comp, auto<br />
transmission w/race converter, 12.5 minimum compression<br />
ratio advised.<br />
RPM range shown is for average usage. These cam profiles<br />
will RPM higher, depending upon application.<br />
<strong>Cams</strong>haft Series/<br />
Grind Number<br />
IMPORTANT: AdjustableVacuum Advance Kits available. See page<br />
333 for details.<br />
IMPORTANT NOTE: 1991-95 GenV engines can use these camshafts<br />
and components if they are converted to adjustable<br />
rocker arms by machining the cylinder heads for 99157-16<br />
7/16”screw-in studs and 13650-1 pushrod guideplates, and<br />
installing appropriate rocker arms.<br />
RPM<br />
POWER<br />
RANGE<br />
R-258/420-2S1-14 IG 4000-<br />
7200<br />
R-258/420-2S-8 4000-<br />
7200<br />
SR-262/374-2S1-14 IG 4200-<br />
7400<br />
R-262/420-2S1-14 IG 4200-<br />
7600<br />
R-262/420-2-6 4200-<br />
7200<br />
R-262/420-2-10 4200-<br />
7400<br />
<strong>Cams</strong>haft<br />
PART NUMBER/<br />
Emissions Code<br />
See pg. 296<br />
LIFTERS<br />
NOTE: Many options are available for these camshafts, and any of<br />
our custom ground camshafts. An iron distributor drive gear<br />
and rear journal can be specified. SFO firing order (4/7 swap)<br />
is offered. Optional journal sizes are: Roller Bearing (1.968”),<br />
2.125”, and 55mm (2.165”). Gun drilling (where applicable)<br />
is available. <strong>Cams</strong>hafts for the GM DRCE family ofV-8’s are<br />
also offered in 55mm and 60mm journal versions.<br />
CRANECAMS.COM<br />
396-402-427-454 cu.in.<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 />
NOTE: In order to use these cams in 65-66 engines, you must<br />
groove the center of the rear cam bearing journal, 3/16”<br />
wide and 7/64”deep.<br />
Since 1975, General Motors divisions have exchanged engines<br />
throughout different models. Be certain of exactly which<br />
engine you have before ordering.<br />
Gross<br />
Lift<br />
Int.<br />
Exh.<br />
138681 *a 13519-16 d 258 290 114 19 59 .020 .714<br />
13570-16 e 262 294 69 13 .020 .714<br />
3<br />
138891 *b 13519-16 d 258 290 108 25 53 .020 .714<br />
13570-16 e 266 298 65 21 .020 .714<br />
3<br />
138641 *a 13519-16 d 262 312 114 22 60 .020 .636<br />
13570-16 e 270 320 74 16 .020 .636<br />
3<br />
138131 *a 13519-16 d 262 294 114 21 61 .020 .714<br />
13570-16 e 270 302 73 17 .020 .714<br />
3<br />
138801 *b 13519-16 d 262 294 106 28 54 .020 .714<br />
13570-16 e 272 304 65 27 .020 .714<br />
3<br />
138811 *b 13519-16 d 262 294 110 25 57 .020 .714<br />
13570-16 e 272 304 70 22 .020 .714<br />
3<br />
R-268/420-2S-8 4400- 138831<br />
7600<br />
*b 13519-16d 268 300 108 30 58 .020 .714<br />
R-268/420-2S-8 SFO 138671 *b,c 13570-16e 272 304 68 24 .020 .714<br />
R-270/420-2S2-14 4400-<br />
7800<br />
R-272/420-2S1-10 4400-<br />
7800<br />
3<br />
138661 *b 13519-16 d 270 302 114 25 65 .020 .714<br />
13570-16 e 278 310 77 21 .020 .714<br />
3<br />
138841 *b 13519-16 d 272 304 110 30 62 .020 .714<br />
13570-16 e 278 310 73 25 .020 .714<br />
3<br />
R-274/4334-2S-10 4600- 138291<br />
8000<br />
*b 13519-16d 274 314 110 30 64 .026 .737<br />
R-274/4334-2S-10 SFO 138301 *b,c 13570-16e 284 324 75 29 .026 .726<br />
3<br />
13574-16 f
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