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- Pontiac Performer RPM Cylinder Head
- 1962-1979 Pontiac 389-455ci
- Valve Springs for Hydraulic Flat Tappet
- Round Exhaust Port (Ram Air)
- Port Volume: 215cc/175cc
- Valve Size: 2.11"/1.66"
- Polished Finish
- Assembled, Sold Each
These cylinder heads are designed for outstanding performance gains in 1962-1979 389-455 c.i.d. Pontiac engines. They are patterned after the 1969-70 Ram Air IV Pontiac cylinder head with the 72cc combustion chamber for higher compression engines.
Tech Tip: These heads require Ram Air IV (round port) style exhaust manifolds or headers and Edelbrock head bolt kit 350-8549.
To gain more spark plug clearance, Edelbrock recommends using Champion RC Series plugs, such as the RC12YC. They are 0.230' shorter than conventional spark plugs and have a 5/8' hex for easier access.Combustion Chamber Volume: 72cc 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: 0.575' Rocker Stud: 7/16' Guideplate: Hardened Steel Pushrod Diameter: 5/16' Valve Angle: 14° Exhaust Port Location: Stock Ram Air IV Spark Plug Fitment: 14mm x 3/4' Reach,
Gasket SeatValve Lift Intake Exhaust .100' 71 69 .200' 143 120 .300' 208 151 .400' 253 173 .500' 264 191 .600' 286 199 .700' N/A N/A Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28' H2O
Since founder Vic Edelbrock Sr. began building performance intake manifolds in 1938, Edelbrock has grown into one of the most trusted names in American high-performance parts, from carburetors and intake manifolds to cylinder heads, crate engines, and EFI systems. JEGS has spent decades supplying Edelbrock components to racers, engine builders, and street enthusiasts, backing this extensive lineup with in-house technical support, fast shipping, and a Price Match Guarantee so you can choose proven Edelbrock parts with confidence.
These cylinder heads are designed for outstanding performance gains in 1962-79 389-455ci 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 have 87cc combustion chambers designed to maximize performance while using less expensive, low octane fuel with a streetable 9.5:1 compression ratio.
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Performer RPM heads with 72cc combustion chamber are for higher compression engines. Performer RPM #60509 is semi-machined and must be finished by a professional 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 and Super Stock.
Performer RPM CNC Heads feature the same specifications as the Performer RPM heads but have CNC-machined combustion chambers, which results in a consistent and precise chamber for improved flow.
Features
- Combustion Chamber Volume: 87cc or 72cc
- Intake Runner Volume: 215cc
- Exhaust Runner Volume: 175cc
- Intake Valve Diameter: 2.11"
- Exhaust Valve Diameter: 1.66"
- Valve Guides: Manganese Bronze
- Deck Thickness: 5/8"
- Valve Spring Diameter: 1.46"
- Maximum Lift: .575"
- Pushrod Diameter: 7/16"
- Guideplate: Hardened Steel
- Valve Angle: 14°
- Exhaust Port Location: Stock Ram Air IV
- Spark Plug Fitment: 14mm x 3/4 Reach, Gasket Seat
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