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Edelbrock Oldsmobile Performer RPM Cylinder Heads

Edelbrock Oldsmobile Performer RPM Cylinder Heads

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Designed for high-performance non-emission 1965-76 Oldsmobile 400, 425 and 455 cubic-inch engines with Torker 455 manifold #350-2730. This head features an improved 77cc combustion chamber design that increases the quench area for a more efficient burn. This results in outstanding horsepower and torque.

These complete heads are assembled and ready-to-run with stainless steel 2.072'' intake valves and 1.680'' exhaust valves, hardened ductile iron valve seats and phosphor bronze guides. The valvetrain has been upgraded from the factory pedestal-mount system to a 7/16'' screw-in stud and 3/8'' pushrod-slot guideplate for increased valvetrain stability.

The high-velocity, factory location ports feature 188cc intake runners and 106cc raised-floor exhaust runners for substantially improved flow and increased power. Head bolt holes are drilled for the stock 7/16'' bolts, but can be easily modified for 1/2'' bolts or studs by drilling the 1/2'' counterbore. Aftermarket rocker arms and hardened pushrods are required for installation. These heads will fit 350-403 Oldsmobiles with Edelbrock manifold #350-7111 only (port matching required). Made In The USA!

  • Combustion Chamber Volume: 77cc
  • Intake Runner Volume: 188cc
  • Exhaust Runner Volume: 106cc
  • Intake Valve Diameter: 2.072"
  • Exhaust Valve Diameter" 1.68
  • Valve Stem Diameter: 11/32"
  • Valve Guides: Manganese Bronze
  • Deck Thickness: 5/8"
  • Valve Spring Diameter: 1.46"
  • Valve Spring Maximim Lift: .575"
  • Rocker Stud: 7/16"
  • Guideplate: Hardended Steel
  • Pushrod Diameter: 3/8"
  • Valve Angle: 18&
  • Exhaust Port Location: Stock
  • Spark Plug Fitment: 14mm x 3/4 Reach, Gasket Seat
  • Made In The USA!

  • 1 Product
    Oldsmobile Performer RPM Aluminum Cylinder Heads

    Oldsmobile Performer RPM Cylinder Head
  • 1965-76 400-455ci
  • 188cc Intake Ports
  • 77cc Combustion Chambers
  • 2.072"/1.68" Valves
  • 1.46" Valve Spring Diameter
  • Max Lift: .575"
  • 7/6" Rocker Studs
  • Polished
  • Assembled, Sold Each
  • FREE
    Order Today Ships 12/09/15

    1 Product