Edelbrock - 61379
Performer Series RPM Cylinder Head
Edelbrock part #61379 Performer RPM bare cylinder heads are designed for use with 1989-98 Holden VN Commodore 5.0L engines applications.
Cylinder Head Specifications: Combustion chamber volume: 62cc; Intake runner volume: 195cc / 200cc; Exhaust runner volume: 68cc; Intake valve diameter: 2.02; Exhaust valve diameter: 1.60; Valve stem diameter: 5/16; Valve guides: Manganese bronze; Deck thickness: 11/16 (extra thick); Valve spring diameter: 1.45 / 1.30; Valve spring maximum lift: .690 / .650; Rocker stud: 7/16; Guideplate: Hardended steel; Pushrod diameter: 3/8; Valve angle: 5°; Exhaust port location: Stock; Spark plug fitment: 14mm x 3/4 reach, gasket seat. INSTALLATION NOTE: Bare heads will have valve guides and seats installed, but will require final sizing and a valve job to match the valves you will be using. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. Deck thickness: 11/16", rocker stud diameter: 7/16", pushrod diameter: 3/8" (width of slot in guide plate).
- Capable Of 500+ Horsepower On Pump Gas
- Intended As Direct Replacement For Factory Heads
- Configured As An Easy Bolt-On Part
- Features an Extra Thick 11/16 in. Deck
- Performer RPM Head PN 61385 Has Port Notched For EFI Applications
