Butler D-Port, 87cc, Hyd. Roller, Aluminum Cylinder Heads w/ Edelbrock Castings, Made in the USA Set/2

Butler Performance built w/Edelbrock Castings

Our Heads feature Edelbrock bare casting cores with all machine work done in our head shop. They are fitted with Ferrea Valves, new guides, Comp Cams Springs, Comp locators, Comp Retainers and Locks. They can optionally be slotted to accept 1.65 rockers if needed.

These heads are custom built per order by Butler Performance

These heads are custom built per order by Butler Performance

Cam Specs- Supplying known Cam Specs are recommended so we can verify the spring setup.

Application- Choose your application so we can verify the head ordered has the proper components for your application

Retainer- Choose standard Chromoly, Titanium or PAC Brand Titanium with Pac Locks

Valves- Choose from Ferrea 5000 (Street Performance) or 6000 (Competition Grade) Valves

Stealth- This is the option where we remove logos from the end of the heads and above the exhaust port. Optionally can be painted

Intake Gaskets- Choose to add intake gaskets

Rocker Slotting- We can slot the pushrod holes to accommodate the angle needed for 1.65 ratio rockers

Exhaust Valve Size- Choose standard size 1.66 or upgrade to 1.77

 Why Edelbrock Castings?
Butler has had the opportunity over the years to have our own brand castings. The decision was easy for us. Due to the amount of metallurgy expertise needed and inconsistencies in foundries, we chose THE experts in the industry that stay on top quality and consistency. They have proven this through years in the performance aftermarket cylinder head and intake business. Here are a few reasons why the Edelbrock casting, Butler Process machining, high quality parts, and expert blueprinting and assembly, there is no other head on the market that comes close.

• Sand Metal Casting, Core Production, Pattern Making, Heat Treating, Engineering, and Machining all in house, Made in the USA
• Don't miss the details- Heli-Coiled Bolt Holes
• Heli-Coil inserts in rocker stud holes to protect threads during torquing.
• Heli-Coil inserts in exhaust bolt holes to protect the threads while installing and removing headers
• More flow than other aluminum heads on the market, right out of the box before CNC porting

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. Two styles are available: a street legal 87cc combustion chamber version for low compression applications using 92 octane fuel and a 72cc chamber version for higher compression, racing applications. 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 option for pushrod holes to be slotted for 1.65 rockers. 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 an additional price. Or, you may send your Edelbrock heads to BPI to be ported and upgraded for improved performance. Additional Options available such as custom matched paint or logo removal This item includes 2 complete heads.