Edelbrock Cylinder Head, 60609, Pontiac Performer RPM CNC Chamber 87cc Bare

The Edelbrock #60609 Performer RPM CNC Bare Cylinder Head has the same specifications as our popular Performer RPM cylinder head for 1962-79 389-455 c.i.d. Pontiac engines, but feature a CNC machined combustion chamber. The CNC machined chamber results in a consistent and precise chamber for improved flow performance. Performer RPM CNC cylinder head is available in two chamber sizes. The 87cc chamber version is ideal for 9.5:1 engines and will deliver excellent street performance on low octane fuel. The Edelbrock #60609 Performer RPM CNC cylinder head is patterned after the same port flange configuration as the 1969-1970 Ram-Air IV Pontiac Cylinder Head.

PERFORMER RPM CNC

These heads require Ram Air IV (round port) style exhaust manifolds or headers and Edelbrock head bolt kit #85492

Utilize the same port flange configuration as the 1969-1970 Ram-Air IV Pontiac cylinder head

Deck thickness: 5/8", rocker stud diameter: 7/16", pushrod diameter: 5/16" (width of slot in guide-plate)

Machined for a consistent & precise combustion chamber for improved flow performance & spark plug location

Must be used on vehicles without secondary air injection to be emissions legal, E.O. D-215-94