Cylinder Heads, Edelbrock, Performer RPM, Buick, Complete

Buick 400-455 Performer RPM Cylinder Head by Edelbrock®

Aluminum Performer RPM cylinder head is matched to Buick 400-455 performance applications.

Edelbrock® Performer RPM aluminum cylinder head is designed for Buick 400, 430 and 455 performance engines. The complete head uses a 68cc combustion chamber with 2.125-inch intake and 1.750-inch exhaust valves, providing a ready-to-install performance upgrade while retaining the Buick engine architecture. Sold individually.

Additional Technical Specifications • Head bolt torque: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 ft./lbs. (Top Row Bolts;), • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 ft./lbs. (Bottom Row Bolts; All Others) • Intake Bolt Torque: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 ft./lbs. • Combustion Chamber Volume: . . . . . . . . . . . . . . . . . . . . . . . . . 68 cc • Intake Port Volume: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 cc • Exhaust Port Volume: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 cc • Deck thickness: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5/8" • Valve Size: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Intake- 2.125", Exhaust- 1.750" • Valve Spring Diameter: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.55" • Valve Spring Installed Height: . . . . . . . . . . . . . . . . . . . . . . . . 1.900" • Valve Spring Pressure: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 lbs • Max. Valve Lift: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .600"- Check Spring Pressures Per Cam Manufacturer. • Valve Spring Coil Bind . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.150” • Rocker Stud Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3/8” • Pushrod Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3/8” • Replacement Valve Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . #5792 • Valve Seats: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hardened, Interlocking, Compatible w/ Unleaded Fuels • Valve Spring Retainers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7°.4140 Steel (#9644)” • Valve Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11/32” x 7º (#9615) • Rocker Arms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjustable 1.6:1 Ratio Required • Pushrods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Custom Length Pushrods. #9605 (Overall Length: 9.650”) • Spark Plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14mm x ¾” Reach, 5/8” Hex, Gasketed Seat