Classic Big Mutha' Thumpr 242/257 Hydraulic Flat Cam for Chevrolet 348-409. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, Gears and headers, very rough idle.
CatalogUser 1This Part Fits:
| Year |
Make |
Model |
Submodel |
| 1958-1965 |
Chevrolet |
Bel Air |
Base |
| 1958-1965 |
Chevrolet |
Biscayne |
Base |
| 1960 |
Chevrolet |
Biscayne |
Fleetmaster |
| 1958-1961 |
Chevrolet |
Brookwood |
Base |
| 1958 |
Chevrolet |
Del Ray |
Base |
| 1959-1965 |
Chevrolet |
Impala |
Base |
| 1964-1965 |
Chevrolet |
Impala |
SS |
⚠️ California Proposition 65 Warning:
This product may expose you to chemicals known to the State of California
to cause cancer or reproductive harm.
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