Product Information
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 |
