Big Mutha' Thumpr 243/257 Hydraulic Roller for Pontiac 265-455. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, Gears and headers, very rough idle. Distributor Gear upgrade required.
CatalogUser 1This Part Fits:
| Year |
Make |
Model |
Submodel |
| 1958-1971,1973-1979 |
Pontiac |
Bonneville |
Base |
| 1976-1979 |
Pontiac |
Bonneville |
Brougham |
| 1959-1970,1978-1979 |
Pontiac |
Bonneville |
Safari |
| 1964-1967 |
Pontiac |
Catalina |
2+2 |
| 1955-1971,1973-1979 |
Pontiac |
Catalina |
Base |
| 1971-1972 |
Pontiac |
Catalina |
Brougham |
| 1959-1979 |
Pontiac |
Catalina |
Safari |
| 1962-1970 |
Pontiac |
Catalina |
Ventura |
| 1955-1958 |
Pontiac |
Chieftain |
Base |
| 1955,1958 |
Pontiac |
Chieftain |
Safari |
| 1967-1970 |
Pontiac |
Executive |
Base |
| 1967-1970 |
Pontiac |
Executive |
Safari |
| 1967-1974,1977,1979 |
Pontiac |
Firebird |
Base |
| 1970-1974,1977,1979 |
Pontiac |
Firebird |
Esprit |
| 1970-1974,1977,1979 |
Pontiac |
Firebird |
Formula |
| 1969-1976,1979 |
Pontiac |
Firebird |
Trans Am |
| 1973-1975,1978-1979 |
Pontiac |
Grand Am |
Base |
| 1975-1977,1979 |
Pontiac |
Grand LeMans |
Base |
| 1977,1979 |
Pontiac |
Grand LeMans |
Safari |
| 1962-1973,1976-1979 |
Pontiac |
Grand Prix |
Base |
| 1975,1977-1979 |
Pontiac |
Grand Prix |
LJ |
| 1975-1976,1978-1979 |
Pontiac |
Grand Prix |
SJ |
| 1971-1974,1976-1977 |
Pontiac |
Grand Safari |
Base |
| 1971-1974 |
Pontiac |
Grandville |
Base |
| 1975 |
Pontiac |
Grandville |
Brougham |
| 1964-1973 |
Pontiac |
GTO |
Base |
| 1963-1974,1976-1977,1979 |
Pontiac |
LeMans |
Base |
| 1972-1973 |
Pontiac |
LeMans |
Luxury |
| 1969-1970,1973-1974,1977,1979 |
Pontiac |
LeMans |
Safari |
| 1970-1974,1976-1977 |
Pontiac |
LeMans |
Sport |
| 1971 |
Pontiac |
LeMans |
T37 |
| 1955-1966 |
Pontiac |
Star Chief |
Base |
| 1966 |
Pontiac |
Star Chief |
Executive |
| 1958 |
Pontiac |
Super Chief |
Base |
| 1961,1963-1970 |
Pontiac |
Tempest |
Base |
| 1964-1965,1968-1969 |
Pontiac |
Tempest |
Custom |
| 1961 |
Pontiac |
Tempest |
LeMans |
| 1961,1963-1969 |
Pontiac |
Tempest |
Safari |
| 1960-1961,1971-1972,1977 |
Pontiac |
Ventura |
Base |
| 1974 |
Pontiac |
Ventura |
GTO |
| 1977 |
Pontiac |
Ventura |
SJ |
