Edelbrock 1- Pont Pef RPM 60599 Int Valve 2 110 X 5 213

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 #9750 Intake Valve is a 2.11" 1-piece, swirl-polished, hardened tip stainless steel valves with undercut stems for increased flow. Fits Edelbrock #60599 Cylinder Heads. Edelbrock Performer RPM LS1 Intake Manifold Without Timing Control Module for Gen III LS. Pontiac:-:389 (6.4L)-455 (7.5L)