Edelbrock Pontiac Performer RPM Heads
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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 Specifications215cc intake ports2.110" intake valve1.660" exhaust valve1.460" valve springsBronze guidesHardened valve seats5/8" thick deck surface
Spec Variations
72cc (for higher compression engines) or 87cc (for low compression using 92 octane).575" max lift7/16" rocker studs
Tech Notes
The semi-machined version of the 72cc heads must be finished by a professional head porter. The heads come with valve guides and seats installed without intake pushrod holes.High-flow, D-shaped exhaust ports require Ram Air IV headers or exhaust manifolds.All factory accessory bosses are included for bolt-on convenience.Installation requires Edelbrock head bolt kit #350-8556.Recommended Edelbrock gaskets: 350-7381 (head), 350-7280 (intake), 350-7281 (exhaust)
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