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Cylinder Head, Performer RPM, 1962-77 Pontiac 389-455, CNC Chamber 87cc, Roller
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Edelbrock® Performer RPM cylinder head is designed for outstanding performance gains in 1962-77 389-455 Pontiac engines. They are patterned after the 1969-70 Ram Air IV Pontiac cylinder head. This cylinder head delivers great throttle response and power from 1500 to 6500 rpm. Sold individually.
Additional Technical Specifications • Deck Thickness: 0.625 in • Deck Height: 10.250 in • Intake Runner Volume: 215cc • Exhaust Runner Volume: 175cc • Combustion Chamber Volume: 72 or 87cc • 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 Plate Material: Hardened Steel • Pushrod Diameter: 5/16 • Rocker Stud Diameter: 7/16-14
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