CYLINDER HEADS - Pontiac - Performer & Performer RPM
Pontiac Performer & Performer RPM
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 head porter. They includes 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.

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
Made In USA




Technical Notes: These heads require Ram Air IV (round port) style exhaust manifolds or headers and Edelbrock head bolt kit #8549. Match with Edelbrock head gasket sets on pages 126-128.
 
Description Bare (Single) Complete (Single)
Performer Pontiac (87cc) (with springs for hydraulic flat tappet cams) 60569 60579
Performer Pontiac (87cc) (with springs for hydraulic roller cams) 60569 60575
Performer RPM Pontiac (72cc) (with springs for hydraulic flat tappet cams) 60589* 60599*
Performer RPM Pontiac (72cc) (with springs for hydraulic roller cams) 60589* 60595*
Performer RPM Pontiac (semi-machined) 60509* N/A
Performer RPM Pontiac (Stock & Super Stock) 60587* N/A
Performer RPM CNC (87cc) (with springs for hydraulic roller cams) N/A 61515*
Performer RPM CNC (72cc) (with springs for hydraulic roller cams) N/A 61525*
Performer RPM CNC (87cc) (with springs for hydraulic flat tappet cams) N/A 61529*
Performer RPM CNC (72cc) (with springs for hydraulic flat tappet cams) N/A 61519*

Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench
#60579
Valve Lift .100" .200" .300" .400" .500" .600" .700"
Intake 72 138 198 239 264 275 N/A
Exhaust 56 106 141 163 175 185 N/A
* Not legal for sale or use on pollution controlled motor vehicles.
Sign Up To Receive Our Newsletter & Members Only Specials  
Privacy Policy | Order A Catalog | Warranty Information