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COMP Cams Big Mutha' Thumpr 243/257 Hydraulic Roller Cam/Lifter Kit Big Block GEN VI for Chevrolet and GMC
Part # CL01-602-8
Description
CL-KIT - Cam and Lifter Kit Includes: Camshaft, Lifters, Assembly Lube, Decals and Instructions.
Specifications
| Advertised Exhaust Duration | 319 deg |
|---|---|
| Advertised Intake Duration | 299 deg |
| Amazon ASIN | B005H89R68 |
| Assembly Lubricant Included | No |
| Basic Operating RPM Range | 2,500-6,200 RPM |
| 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 Federally Certified Vehicles Manufactured Before 1967? | 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. Exempt for Racing and Off-Road Only Vehicles? | Yes, but must be a race/competition only vehicle. |
| Cam Type | Hydraulic Roller |
| Camshaft Gear Attachment | 3-Bolt |
| Camshaft Material | Austempered Ductile Iron |
| Camshaft Series | Thumpr |
| Engine Family | Chevrolet GEN VI 454 and 502 c.i. 8 Cylinder (1996-1999) |
| Exhaust Duration at .050 inch Lift | 257 deg |
| Exhaust Valve Lift | 0.554 in |
| Gaskets Included | No |
| Intake Duration at .050 Inch Lift | 243 deg |
| Intake Valve Lift | 0.569 in |
| Kit Type | CL-Kit - Cam and Lifter Kit |
| Lifter Type | Hydraulic Roller |
| Lifters Included | Yes |
| Lobe Separation | 107 deg |
| Locks Included | No |
| Retainers Included | No |
| Timing Chain and Gears Included | No |
| Usage | Street/Strip |
| Valve Springs Required | Yes |
| Valve Stem Seals Included | No |
| UPC / GTIN | 00036584215011 |
| Year | Make | Model | Submodel | Engine |
|---|---|---|---|---|
| 1996 - 1997 | Chevrolet | C2500 | Base, Cheyenne, Silverado | 7.4L V8 |
| 1998 | Chevrolet | C2500 | Cheyenne, Silverado, WT | 7.4L V8 |
| 1999 - 2000 | Chevrolet | C2500 | Base, LS | 7.4L V8 |
| 1996 - 1997 | Chevrolet | C2500 Suburban | Base, LS, LT | 7.4L V8 |
| 1998 - 1999 | Chevrolet | C2500 Suburban | Base, LS | 7.4L V8 |
| 1996 - 1997 | Chevrolet | C3500 | Base, Cheyenne, Silverado | 7.4L V8 |
| 1998 | Chevrolet | C3500 | Cheyenne, Silverado | 7.4L V8 |
| 1999 - 2000 | Chevrolet | C3500 | Base, LS | 7.4L V8 |
| 1996 - 2000 | Chevrolet | Express 3500 | Base, LS | 7.4L V8 |
| 1996 | Chevrolet | G30 | Chevy Van | 7.4L V8 |
| 1996 - 1997 | Chevrolet | K2500 | Base, Cheyenne, Silverado | 7.4L V8 |
| 1998 | Chevrolet | K2500 | Cheyenne, Silverado, WT | 7.4L V8 |
| 1999 - 2000 | Chevrolet | K2500 | Base, LS | 7.4L V8 |
| 1996 - 1997 | Chevrolet | K2500 Suburban | Base, LS, LT | 7.4L V8 |
| 1998 - 1999 | Chevrolet | K2500 Suburban | Base, LS | 7.4L V8 |
| 1996 - 1997 | Chevrolet | K3500 | Base, Cheyenne, Silverado | 7.4L V8 |
| 1998 | Chevrolet | K3500 | Cheyenne, Silverado | 7.4L V8 |
| 1999 - 2000 | Chevrolet | K3500 | Base, LS | 7.4L V8 |
| 1996 - 1999 | Chevrolet | P30 | Base | 7.4L V8 |
| 1996 - 2000 | GMC | C2500 | Sierra SL, Sierra SLE, Sierra SLT | 7.4L V8 |
| 1996 - 1999 | GMC | C2500 Suburban | Base, SLE, SLT | 7.4L V8 |
| 1996 - 2000 | GMC | C3500 | Sierra SL, Sierra SLE, Sierra SLT | 7.4L V8 |
| 1996 | GMC | G3500 | Rally | 7.4L V8 |
| 1996 - 2000 | GMC | K2500 | Sierra SL, Sierra SLE, Sierra SLT | 7.4L V8 |
| 1996 - 1999 | GMC | K2500 Suburban | Base, SLE, SLT | 7.4L V8 |
| 1996 - 2000 | GMC | K3500 | Sierra SL, Sierra SLE, Sierra SLT | 7.4L V8 |
| 1996 - 1999 | GMC | P3500 | Base | 7.4L V8 |
| 1996 - 2000 | GMC | Savana 3500 | Base, SLE | 7.4L V8 |