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COMP Cams Big Mutha' Thumpr 243/257 Hydraulic Flat Cam 400, 430, 455 for Buick
Part # 96-602-5
Description
Big Mutha' Thumpr 243/257 Hydraulic Flat Cam for Buick 400, 430, 455. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, Gears and headers, very rough idle.
Specifications
| Advertised Exhaust Duration | 313 deg |
|---|---|
| Advertised Intake Duration | 295 deg |
| Amazon ASIN | B005H89UX8 |
| Assembly Lubricant Included | Yes |
| Basic Operating RPM Range | 2,500-6,400 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 and Lifter Kit Upgrade | CL96-602-5 |
| Cam Type | Hydraulic Flat Tappet |
| Camshaft Material | Cast Iron |
| Camshaft Series | Thumpr |
| Engine Family | Buick 400, 430, 455 c.i. 8 Cylinder (1967-1976) |
| Exhaust Duration at .050 inch Lift | 257 deg |
| Exhaust Valve Lift | 0.502 in |
| Grind Number | 295TH7 |
| Intake Duration at .050 Inch Lift | 243 deg |
| Intake Valve Lift | 0.517 in |
| K-Kit Upgrade | K96-602-5 |
| Lifter Type | Hydraulic Flat Tappet |
| Lifters Included | No |
| Lobe Separation | 107 deg |
| Usage | Street/Strip |
| Valve Springs Required | Yes |
| UPC / GTIN | 00036584213383 |
| Year | Make | Model | Engine |
|---|---|---|---|
| 1971 - 1973 | Buick | Centurion | 7.5L V8 |
| 1973 - 1974 | Buick | Century | 7.5L V8 |
| 1967 - 1969 | Buick | Electra | 7.0L V8 |
| 1970 - 1974 | Buick | Electra | 7.5L V8 |
| 1970 - 1974 | Buick | Estate Wagon | 7.5L V8 |
| 1967 | Buick | Gran Sport | 6.6L V8 |
| 1968 - 1969 | Buick | GS 400 | 6.6L V8 |
| 1970 - 1972 | Buick | GS 455 | 7.5L V8 |
| 1970 - 1974 | Buick | LeSabre | 7.5L V8 |
| 1975 | Buick | LeSabre | 6.6L V8 |
| 1973 - 1974 | Buick | Regal | 7.5L V8 |
| 1967 - 1969 | Buick | Riviera | 7.0L V8 |
| 1970 - 1974 | Buick | Riviera | 7.5L V8 |
| 1967 - 1968 | Buick | Skylark | 6.6L V8 |
| 1970 - 1971 | Buick | Skylark | 7.5L V8 |
| 1968 - 1969 | Buick | Sportwagon | 6.6L V8 |
| 1970 | Buick | Sportwagon | 7.5L V8 |
| 1967 - 1969 | Buick | Wildcat | 7.0L V8 |
| 1970 | Buick | Wildcat | 7.5L V8 |