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Camshafts Roller
351 Cleveland Roller Lifter Camshafts
| Company | Part # | Type Solid/ Hydro | Grind # | Lift Intake | Lift Exhaust | Advertised Duration | RPM Range | Compression Ratio | Usage |
| Comp Cams | 32-411-8 | HYDRO | 260HR | .510 | .510 | 260 I/E | 1200 to 4500 | (not specified) | Best with stock engine for economy or towing. Can be used with stock gears and converter. Smooth idle. |
| Comp Cams | 32-421-8 | HYDRO | 270HR | .566 | .566 | 270 I/E | 1800 to 5000 | (not specified) | Mild street performance. lightly noticeable lope at idle. Will work with stock converter or even better with 1800+ stall & gear upgrade. |
| Comp Cams | 32-431-8 | HYDRO | 284HR | .566 | .566 | 284 I/E | 2000 to 5500 | (not specified) | Great in street machines. Best above 3500+ rpm.Good torque. Largest cam with stock heads and intake. 2000+ stall. |
| Comp Cams | 32-541-8 | HYDRO | 290HR | .578 | .578 | 290 I/E | 2500 to 6000 | (not specified) | Perfect for street machine. Best with 4 speed and 3.40-4.10gears. Aftermarket intake, headers and mild converter. 2500+ converter. |
| Comp Cams | 32-651-8 | HYDRO | 304HR | .612 | .612 | 304 I/E | 3000 to 6500 | (not specified) | Street/strip only. 4 speed or 3000+ stall and 4.10 or lower gear. Higher compression, after market intake and headers. |
| Comp Cams | 32-771-9 | MECH | 288R | .623 | .623 | 288 I/E | 2500 to 6500 | (not specified) | Excellent power for serious street use. 3000+ stall with low gear and headers. Rough idle. |
| Comp Cams | 32-772-9 | MECH | 308R | .651 | .651 | 308 I/E | 3000 to 7000 | (not specified) | Ultimate Pro Street cam. 4000+ stall or 4 speed 11:1 compression, radical race idle. |
| Isky Cams | 431640 | MECH | RR-640 | .640 | .640 | 304 I/E | 3200-6800 | 11-12:1 | Good cam for 3500LB bracket racing “drags”. 3000 stall. 4.56-4.88 axle ratio. Up to 800 CFM Carb. |
| Isky Cams | 431650 | MECH | RR-650 | .650 | .650 | 318 I/E | 3500-7200 | 11-12:1 | Good all around perf. for bracket racing. 4000-4500 stall. 4.88-5.13 axle ratio. 850+Carb. |
| Isky Cams | 431686 | MECH | RR-686 | .686 | .686 | 320 I/E | 4500-8000 | "high compr" | Good all-around perf. in super-gas & super comp. 5000 stall. 5.38-5.86 axle ratio. 850+CFM. |
| Isky Cams | 431730 | MECH | RR-730 | .730 | .730 | 314 I/E | 3800-7500 | "high compr" | Super Gas, Super Comp: 5000 stall. 4.88 axle ratio. Tunnel Ram Intake with 2 carburetors. |
| Isky Cams | 431727 | MECH | RR-727 | .727 | .727 | 330 I/E | 4500-8500 | "high compr" | Good all-around perf. in super-gas & super comp. 5000 stall. 5.38-5.86 axle ratio. 850+CFM. |
| Isky Cams | 431749 | MECH | RR-747-C | .747 | .730 | 318 I320 E | 4200-8400 | "high compr" | Comp. eliminator, super-comp drags. 5000+stall. 5.86-6.14axle ratio. Tunnel ram manifold with 2 carbs. |
| Isky Cams | 431750 | MECH | RR-747-D | .747 | .730 | 320 I322 E | 4400-8800 | "high compr" | Comp. eliminator, super-comp drags. 5000+stall. 5.86-6.14axle ratio. Tunnel ram manifold with 2 carbs. |
If compression ratio says not specified, manufacture didn't provide specs. You can assume a stock to 1/2-1 point difference, there are always exceptions unfortunately. If you are unsure about anything listed here, ask someone on the message board, they are more than happy to help.
Isky Cams started stating high compr for recommended compression ratios after 12:1. Assume 1-2 points higher than 12:1. But if in doubt for the proper compression ratio ask one of the knowledgeable people on the message board.
Isky Cams started stating high compr for recommended compression ratios after 12:1. Assume 1-2 points higher than 12:1. But if in doubt for the proper compression ratio ask one of the knowledgeable people on the message board.
blizzardND |
Latest page update: made by blizzardND
, Nov 13 2009, 1:35 PM EST
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