Edelbrock 60509 - Edelbrock Pontiac Performer RPM Heads

Edelbrock 60509 - Edelbrock Pontiac Performer RPM Heads Details
Pontiac Performer RPM Aluminum Cylinder Heads
A 72cc chamber version for high-compression, racing applications. Heads have Ram Air IV exhaust port flanges. Requires head bolt kit #350-8556 for cylinder heads manufactured before 3/15/02. For cylinder heads manufactured after 3/15/02 bolt kit #350-8549 will be required. Tech Tip Note:Semi-machined version must be finished by a professional head porter (it comes with valve guides and seats installed with no intake pushrod holes).
To gain more spark plug clearance, Edelbrock recommends using Champion RC Series plugs, such as the RC12YC (P/N 192-49776). They are 0.230'' shorter than conventional spark plugs and have a 5/8'' hex for easier access.
(B) Recommended valve sizes.
Patterned after the 1969-70 Ram Air IV Pontiac cylinder heads, these heads produce outstanding horsepower with excellent low-speed torque and throttle response.
Applications
1965-79 Pontiac 389-455 (high-performance street legal)
*Part number 350-60579 is 50-state street legal (E.O. #D-215-16)
Shared Specifications
Spec Variations
Tech Notes

