Cylinder Head Specifications:; Combustion chamber volume: 87cc; Intake runner volume: 215cc; Exhaust runner volume: 175cc; Intake valve diameter: 2.11"; Exhaust valve diameter: 1.66"; Valve stem diameter: 11/32"; Valve guides: Manganese bronze; Deck thickness: 5/8"; Valve spring diameter: 1.46"; Valve spring maximum lift: .575"; Rocker stud: 7/16"; Guideplate: Hardended steel; Pushrod diameter: 5/16"; Valve angle: 14°; Exhaust port location: Stock Ram Air IV; Spark plug fitment: 14mm x 3/4 reach, gasket seat. These cylinder heads are designed for outstanding performance gains in 1962-79 389-455 c.i.d. Pontiac engines. They are patterned after the 1969-70 Ram Air IV Pontiac cylinder head. Performer heads #60579/#60575 are 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. Our Performer RPM heads with the 72cc combustion chamber are for higher compression engines. Performer RPM #60509 is semi-machined and must be finished by a professional cylinder head porter. They include valve guides and seats installed with no intake pushrod holes. Performer RPM #60587 is not port matched or bowl blended and is NHRA accepted for Stock & Super Stock. INSTALLATION NOTE: These heads require Ram Air IV (round port) style exhaust manifolds or headers and Edelbrock head bolt kit #8549. Deck thickness: 5/8", rocker stud diameter: 7/16", pushrod diameter: 5/16" (width of slot in guide plate).
Edelbrock Chrome Steel Fuel Line with Blue Anodized Aluminum Filter for Edelbrock Performer and Thunder Series AVS Carburetors.
Pontiac:-:326 (5.3L)/350 (5.7L)/389 (6.4L)/400 (6.6L)/421 (6.9L)/428 (7.0L)/455 (7.4)
Edelbrock; Pontiac Head; 72cc Bare; V8; Cylinder Heads; 60589; 389; 400; 455
Edelbrock, Pontiac Head, 72cc Bare, V8, Cylinder Heads, 60589, 389, 400, 455
Edelbrock Single Perf. Pontiac 72cc Head Bare
Edelbrock Single Perf Pontiac 72cc Head Bare
Single Perf. Pontiac 72cc Head Bare
RPM Pontiac Cylinder Head 72cc Bare
Edelbrock Cylinder Heads
Engine Cylinder Head
CYLINDER HEADS
CYLINDER HEAD
{ eo : 3in.}
{"eo":"3"}
Cyl. Head
