Butler Performance "Ram Air Port" CNC Machined Aluminum Pontiac 87cc Cylinder Heads, (Pair)

Includes all of the features below from our popular CNC Ported Edelbrock Cylinder heads but with a new port design for 2026

With extensive digital modeling, CAD and CAM design, and flow testing of a newly designed port we are able to keep your RA4 intake port height and width but create 310-315cfm of flow. This allows the use of all the popular intakes that can be port matched to the RA4 port size. This is a big deal when it comes to intake heights for Shaker and hood clearances.

Edelbrock Performer RPM heads produce outstanding horsepower with excellent low speed torque and throttle response. Designed for 1965-79 389-455 c.i.d. Pontiac engines, these heads are patterned after the 1969 -70 Ram Air IV Pontiac cylinder head. Two styles are available: a street legal 87cc combustion chamber version for low compression applications using 92 actane fuel and a 87cc chamber version for higher compression, racing applications. Both heads have Ram Air IV exhaust port flanges.

BP has conducted extensive flow bench, dyno, and track testing with these heads, all resulting in great performance numbers. We have cylinder head packages for any application, from 7-second racecars to 8 & 9 second street cars and even daily drivers. Call for a cylinder head combo to fit your needs.

All BPI heads have polished chambers and the pushrod holes are slotted for 1.65 rockers, included in the prices. All these heads use standard valve train components.

All BPI Edelbrock in-stock heads can be upgraded with roller springs, titanium retainers, milling, o-ringed, etc. for additional price. Or, you may send your Edelbrock heads to BPI to be ported and upgraded for improved performance.