Edelbrock Pontiac Performer D-Port Head - 87cc - Assembled
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Cylinder Head Specifications: Combustion chamber volume: (A) 65cc / 72cc / 87cc; Intake runner volume: 204cc; Exhaust runner volume: 145cc; Intake valve diameter: 2.11"; Valve stem diameter: 11/32"; Exhaust valve diameter: 1.66"; Valve guides: Manganese bronze; Deck thickness: 5/8"; Valve spring diameter: 1.46"; 120lbs. @ 1.800" Inst. Height; Valve spring maximum lift: .550"; 1.150" Coil Bind; Rocker stud: 7/16"; Guideplate: Hardened steel; Pushrod diameter: 5/16"; Valve angle: 14 °; Exhaust port location: Stock; Spark plug fitment: 14mm x 3/4 reach, gasket seat.. Performer Pontiac heads utilize a D-Port exhaust port configuration for use with standard D-port exhaust systems. They are designed for 1962-79 389, 400, 421, 455 cid V8 Pontiac engines with a 4.060in. or larger bore. They feature optimized oil return passages for increased oil flow. These heads are available in three heart shaped combustion chamber sizes, including 65cc, 72cc and 87cc. The 65cc combustion chambers are as-cast while the 72cc and 87cc chambers are fully CNCd to provide a 9.5:1 compression ratios when used with flat-top pistons. The spark plug has been relocated closer to the exhaust valve for improved performance. These heads are cast with extra thick port walls and a compact port size, making them ideal for CNC and hand parting. Complete heads include guide plats, rocker studs and high quality valvetrain for direct bolt-on application. Head crossover machined for 50-state emissions legal performance. INSTALLATION NOTE: 350 c.i.d. engines may require notching the block for valve clearance. Three head bolt bosses are raised higher than the standard D-port heights and will require head bolt kit #8561 to install these heads. Deck thickness: 5/8", rocker stud diameter: 7/16", pushrod diameter: 5/16" (width of slot in guide plate).
Since 1938, Edelbrock has been committed to making the finest high performance products in the industry. The famous Edelbrock Intake Manifold, Edelbrock Aluminum Cylinder Heads and Edelbrock Water Pumps have become the industry standard. Edelbrock cylinder heads offer improved performance throughout the rpm range for great throttle response and top-end horsepower. Edelbrock Victor Jr. cylinder heads are ideal for racers looking for an affordable head that makes maximum power. They have a high horsepower potential out-of-the-box, for a cost effective, race-winning set-up. Edelbrock Victor Cylinder Heads and Edelbrock Victor CNC Cylinder Heads are used by many of the best racers in the country and are the best choice for all-out competition. An Edelbrock intake manifold will provide the power right where you want it.
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