Edelbrock 1- Pont Perf RPM 60579 Exh Valve 1 660 X 5 110

1-piece, swirl-polished, hardened tip stainless steel exhaust valves with undercut stems for increased flow. Hard-chromed valve stems are 11/32in. except where noted The Edelbrock #9783 Exhaust Valve is a 1.66" 1-piece, swirl-polished, hardened tip stainless steel valve with undercut stems for increased flow. Fits Edelbrock #60579, #61579 & #61599 Cylinder Heads Edelbrock part #182062 is a state-of-the-art Electric Fuel Pump offering maximum performance in a compact package. Pontiac:-:326 (5.3L)-455 (7.5L)