COMP Cams Thumpr 227/241 Hydraulic Roller Cam for Pontiac 265-455 51-600-11
Specifications:
| Camshaft Series | Thumpr |
| Usage | Street/Performance |
| Cam Type | Hydraulic Roller |
| Grind Number | 283THR7 |
| Basic Operating RPM Range | 1,700-5,500 |
| Intake Duration at .050 Inch Lift | 227 |
| Exhaust Duration at .050 inch Lift | 241 |
| Advertised Intake Duration | 283 |
| Advertised Exhaust Duration | 303 |
| Lifters Included | No |
| Valve Springs Required | Yes |
| Assembly Lubricant Included | No |
| Camshaft Gear Attachment | 1-Bolt |
| Exhaust Valve Lift | 0.498 |
| Intake Valve Lift | 0.513 |
| Lobe Separation | 107 |
| Camshaft Material | Billet Steel |
| Cam and Lifter Kit Upgrade | CL51-600-11 |
| K-Kit Upgrade | K51-600-11 |
| Lifter Type | Hydraulic Roller |
| California Proposition 65 | WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov |
| Title | Thumpr 227/241 Hydraulic Roller Cam for Pontiac 265-455 |
| Amazon ASIN | N/A |
| C.A.R.B. Exempt for Racing and Off-Road Only Vehicles? | Yes, but must be a race/competition only vehicle. |
| C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967? | Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965? | Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967? | Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for On-Road Vehicles? | No |
| C.A.R.B. Exemption Reason | N/A |
| C.A.R.B. E.O. Number | N/A |
| Engine Family | Pontiac 265-455 C.I. 8 Cylinder (1955-1981) |
| 10602 | 283THR7 |
| Description_KSW | SD |
| Description_KSW | SD455 |
| Description_KSW | HO |
| Description_KSW | 455 HO |
| Description_KSW | Trans-Am |
| Description_KSW | Catalina |
| Description_KSW | Firebird |
| Description_KSW | Formula |
| Description_KSW | 421 |
| Description_KSW | 455 |
| Description_KSW | 400 |
| Description_KSW | 428 |
| Description_KSW | 350 |
| Description_KSW | 265 |
| Description_KSW | 301 |
| Description_KSW | 370 |
| Description_KSW | 389 |
| Description_KSW | 301 |
| Description_KSW | 287 |
| Description_KSW | 317 |
| Description_KSW | 347 |
| Description_KSW | Ram Air |
| Description_KSW | Ram Air IV |
| Description_KSW | Ram Air III |
| Description_KSW | Bonneville |
| Description_KSW | Grand Prix |
| Description_KSW | LeMans |
| Description_KSW | Parisienne |
| Description_KSW | Grand Am |
| Description_KSW | Century |
| Description_KSW | Regal |
| Description_DES | Thumpr 227/241 Hydraulic Roller Cam for Pontiac 265-455 |
| Description_APS | Pontiac 265-455 V8 |
| Description_EXT | High performance street |
| Description_EXT | stock converter ok |
| Description_EXT | best with 2000+ converter and gears |
| Description_EXT | choppy/thumping idle. |
| Description_SHO | T 227/241 HRlr Pont |
| Description_INV | Thmpr 227/241 H-Rolr Cam Pontiac 265-455 |
| Description_KSW | Pontiac |
| Description_KSW | Super Duty |
| Description_DEF | Engine Camshaft |