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EDELBROCK #60589 Pontiac Performer RPM Cylinder Head - Bare

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Cylinder Head - Performer RPM - Bare - 2.110 / 1.660 in Valve - 215 cc Intake - 72 cc Chamber - Aluminum - Pontiac V8 - Each


Performer RPM Pontiac 389-455 (With Ram Air IV Exhaust)
  • Designed for outstanding performance gains in 1965-79 389-455 c.i.d. Pontiac engines
  • Patterned after the 1969-70 Ram Air IV Pontiac cylinder head
  • 72cc version is for higher compression engines
  • #60587 is not port matched or bowl blended & is NHRA-accepted for Stock & Super Stock

Cylinder Head Specifications

Combustion chamber volume72cc
Intake runner volume215cc
Exhaust runner volume175cc
Intake valve diameter2.11"
Exhaust valve diameter1.66"
Valve stem diameter11/32"
Valve guidesManganese bronze
Deck thickness5/8"
Valve spring diameter1.46"
Valve spring maximum lift.575"
Rocker stud7/16"
GuideplateHardended steel
Pushrod diameter5/16"
Valve angle14
Exhaust port locationStock Ram Air IV
Spark plug fitment14mm x 3/4 reach, gasket seat
Made InUSA
Technical Notes: Semi-machined version must be finished by a professional head porter (includes valve guides and seats installed with no intake pushrod holes). These heads require Ram Air IV (round port) style exhaust manifolds or headers and Edelbrock head bolt kit #8549.

More Information
Manufacturer Part#60589
Air Restricted NO
Truck Freight OnlyNO
WarningsThis product can expose you to chemicals including Lead, which is/are known to the State of California to cause cancer and birth defects or other reproductive harm
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