Edelbrock 60589 - Edelbrock Pontiac Performer RPM Heads

Edelbrock #350-60589

Pontiac Performer RPM Cylinder Head

Bare head

215cc intake ports

72cc combustion chambers

Cut for 2.110'' Int/1.660'' Exh

Cut for 1.460'' valve springs

Sold individually

Accessories

Installation Instructions for Edelbrock 60589 - Edelbrock Pontiac Performer RPM Heads

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Edelbrock 60589 - Edelbrock Pontiac Performer RPM Heads Details

Pontiac Performer RPM Aluminum Cylinder Heads

A 72cc chamber version for high-compression, racing applications. Heads have Ram Air IV exhaust port flanges. Requires head bolt kit #350-8556 for cylinder heads manufactured before 3/15/02. For cylinder heads manufactured after 3/15/02 bolt kit #350-8549 will be required.

Tech Tip
To gain more spark plug clearance, Edelbrock recommends using Champion RC Series plugs, such as the RC12YC (P/N 192-49776). They are 0.230'' shorter than conventional spark plugs and have a 5/8'' hex for easier access.

Patterned after the 1969-70 Ram Air IV Pontiac cylinder heads, these heads produce outstanding horsepower with excellent low-speed torque and throttle response.

Applications
1965-79 Pontiac 389-455 (high-performance street legal)
*Part number 350-60579 is 50-state street legal (E.O. #D-215-16)

Shared Specifications

215cc intake ports

2.110" intake valve

1.660" exhaust valve

1.460" valve springs

Bronze guides

Hardened valve seats

5/8" thick deck surface

Spec Variations

72cc (for higher compression engines) or 87cc (for low compression using 92 octane)

.575" max lift

7/16" rocker studs

Tech Notes

The semi-machined version of the 72cc heads must be finished by a professional head porter. The heads come with valve guides and seats installed without intake pushrod holes.

High-flow, D-shaped exhaust ports require Ram Air IV headers or exhaust manifolds.

All factory accessory bosses are included for bolt-on convenience.

Installation requires Edelbrock head bolt kit #350-8556.

Recommended Edelbrock gaskets: 350-7381 (head), 350-7280 (intake), 350-7281 (exhaust)