Powerful and lightweight

The Edelbrock Performer Series cylinder head is designed for outstanding performance gains in 1962-79 389-455 Pontiac engines. This head is 50-state emissions legal for 1965-79 vehicles. They feature 87cc combustion chambers designed to maximize performance while using less expensive, low-octane fuel with a streetable 9.5:1 compression ratio. They are patterned after the 1969-70 Ram Air IV Pontiac cylinder head. A performer head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. They also feature the highest quality intake and exhaust valves and valve springs. Available in hydraulic flat tappet and hydraulic roller lifter configurations. 12 Month Warranty.

Horsepower: 400-500 HP CARB Executive Order Number: D-215-94 Deck Thickness: 0.625 in Intake Runner Volume: 215 cc Exhaust Runner Volume: 175cc Combustion Chamber Volume: 87 cc Valve Angle: 14 degrees Intake Valve Diameter: 2.11 in Exhaust Valve Diameter: 1.66 in Seat Angle: Exhaust 45 deg/Intake 45 deg Guide Plates Included: Yes Guide Plate Material: Hardened Steel Rocker stud diameter: 7/16"