Edelbrock Cylinder Head, 60575, Performer Pontiac, 87cc Hydraulic Roller Camshaft

The Edelbrock #60575 Performer cylinder head is designed for outstanding performance gains in 1962-79 389-455 c.i.d. Pontiac engines. The Edelbrock #60575 Performer cylinder head is 50-state emissions legal for 1965-79 vehicles. They feature 87cc combustion chambers designed to maximize performance while using less expensive, low-octane fuel with a streetable 9.5:1 compression ratio. They are patterned after the 1969-70 Ram Air IV Pontiac cylinder head. A performer head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. They also feature the highest quality intake and exhaust valves and valve springs.

PERFORMER & PERFORMER RPM

Outstanding performance gains in Pontiac 1962-79 389-455 c.i.

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

Performer heads #60579/#60575 are 50-state emissions legal for 1965-79 vehicles

Performer heads feature 87 cc combustion chambers for use with low-octane fuel & 9.5:1 compression ratio

Performer RPM heads with 72 cc combustion chambers for higher compression engines

Bare heads have valve guides & seats installed but require final sizing & a valve job to match the valves you purchase

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

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

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