Butler Round Port 87cc Aluminum Cylinder Heads, Hyd. Roller w/ Edelbrock Castings, Made in the USA (Pair)
BP Built Pontiac 87cc ROUND PORT BP/Edelbrock Heads - Complete Set **Hyd Roller (Double Spring)** w/ CNC Machined ChambersIncludes 2 Complete Heads
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. with optional upgrades.
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
Butler Performance offers many heads from today's top manufacturers such as Edelbrock and more. We only sell heads from names we trust that build high quality heads designed specifically for your application. Here at Butler Performance , we not only provide these heads in the box, but can customize then for your specific application.
Much like rotating assemblies, we do not leave anything to chance. All of our custom cylinder heads go through an extensive multi-step process to ensure they are up to the "Butler Standard". We provide many services such as hand or CNC porting. Our valve jobs are done using Serti equipment for ultra high precision valve seating and valve guides. This equipment is standard in high precision applications such as Formula One Racing and super high performance racing applications.
Butler Built and Blueprinted to same specs as the Edlebrock 61525 out of box cylinder
Performer RPM CNC cylinder heads have the same specifications as our popular Performer RPM Round Port cylinder heads for 1962-79 455 cubic inch Pontiac engines, but feature a CNC machined combustion chamber. The CNC machined chamber results in a consistent and precise chamber for improved flow performance & more efficient combustion. Performer RPM CNC cylinder heads are available in two chamber sizes. The 87cc chamber version is ideal for 10:1 engines and will deliver excellent street performance on low octane fuel. Performer RPM CNC cylinder heads with 72cc chambers are best for higher compression engines. Both are patterned after the same port flange configuration as the 1969-1970 Ram-Air IV Pontiac Round Port cylinder heads. EQUIPPED WITH SPRINGS FOR USE IN HYDRAULIC ROLLER CAMSHAFT APPLICATIONS
- Cylinder Head Specifications:
- Combustion chamber volume: 72/87cc
- Intake runner volume: 215cc
- Exhaust runner volume: 175cc
- Intake valve diameter: 2.11"
- Exhaust valve diameter: 1.66"
- Valve stem diameter: 11/32"
- Valve guides: Manganese bronze
- Deck thickness: 5/8"
- Valve spring diameter: 1.46"
- Valve spring maximum lift: .575"
- Rocker stud: 7/16"
- Guideplate: Hardended steel
- Pushrod diameter: 5/16"
- Valve angle: 14°
- Exhaust port location: Stock Ram Air IV
- Spark plug fitment: 14mm x 3/4 reach, gasket seat
- Item Requires Shipping
- 70.0 lbs.
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