The Small-block Chevy cylinder head is designed for 1987-95 Throttle Body Injected (T.B.I.) and Tuned Port Injected (T.P.I.) 5.7L S/B Chevy engines originally equipped with centerbolt valve covers. Performer centerbolt cylinder heads are 50-state street legal and accept factory centerbolt valve covers. The intake bolt pattern utilizes the 1987-95, 73° angle on the two center bolts. Will maintain stock compression ratio when used with the recommended head gasket. The Corvette centerbolt cylinder head is designed for 1986-91 Tuned Port Injected (T.P.I) 5.7L small-block Chevy Corvette engines originally equipped with centerbolt valve covers. Performer centerbolt cylinder heads are 50-state street legal and accept factory centerbolt valve covers. The intake bolt pattern utilizes the 1986-91 (straight) 90° angle on all bolts. Spark plugs are angled like stock O.E. heads. INSTALLATION NOTE: Match with Edelbrock head gasket sets. Bare heads will have valve guides and seats installed, but will require final sizing and a valve job to match the valves you will be using. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. Bare heads will have valve guides and seats installed, but will require final sizing and a valve job to match the valves you will be using. Edelbrock pushrods #9632 are recommended. Requires hardened pushrods. Pedestal mount rockers. When using hot air choke Q-Jet carbs, choke kit #1932 is required. Intended for use on small-bore (3.736" - 4.00") 265, 283, 305 & 307 engines. Deck thickness: 9/16", rocker stud diameter: 3/8", pushrod diameter: 5/16" (width of slot in guide plate).
This Part Fits:
Year |
Make |
Model |
Submodel |
1965-1978 |
Pontiac |
Bonneville |
Base |
1976-1978 |
Pontiac |
Bonneville |
Brougham |
1965-1970,1978 |
Pontiac |
Bonneville |
Safari |
1965-1967 |
Pontiac |
Catalina |
2+2 |
1965-1978 |
Pontiac |
Catalina |
Base |
1971-1972 |
Pontiac |
Catalina |
Brougham |
1965-1978 |
Pontiac |
Catalina |
Safari |
1965-1970 |
Pontiac |
Catalina |
Ventura |
1967-1970 |
Pontiac |
Executive |
Base |
1967-1970 |
Pontiac |
Executive |
Safari |
1968-1969 |
Pontiac |
Firebird |
400 |
1968-1977 |
Pontiac |
Firebird |
Base |
1970-1974,1976 |
Pontiac |
Firebird |
Esprit |
1970-1979 |
Pontiac |
Firebird |
Formula |
1969-1979 |
Pontiac |
Firebird |
Trans Am |
1973-1975 |
Pontiac |
Grand Am |
Base |
1975-1977 |
Pontiac |
Grand LeMans |
Base |
1975,1977 |
Pontiac |
Grand LeMans |
Safari |
1965-1974,1976-1977 |
Pontiac |
Grand Prix |
Base |
1975,1977 |
Pontiac |
Grand Prix |
LJ |
1975-1977 |
Pontiac |
Grand Prix |
SJ |
1971-1978 |
Pontiac |
Grand Safari |
Base |
1971-1974 |
Pontiac |
Grandville |
Base |
1975 |
Pontiac |
Grandville |
Brougham |
1965-1966,1968-1973 |
Pontiac |
GTO |
Base |
1970-1971 |
Pontiac |
GTO |
The Judge |
1968-1977 |
Pontiac |
LeMans |
Base |
1972-1974 |
Pontiac |
LeMans |
Luxury |
1969-1970,1973-1975,1977 |
Pontiac |
LeMans |
Safari |
1974 |
Pontiac |
LeMans |
Safari Luxury |
1970-1977 |
Pontiac |
LeMans |
Sport |
1971 |
Pontiac |
LeMans |
T37 |
1965-1966 |
Pontiac |
Star Chief |
Base |
1966 |
Pontiac |
Star Chief |
Executive |
1968,1970 |
Pontiac |
Tempest |
Base |
1968 |
Pontiac |
Tempest |
Custom |
1970 |
Pontiac |
Tempest |
GT |
1968 |
Pontiac |
Tempest |
Safari |