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 1
This 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 |
