RPM Pro Port Pontiac Cylinder Head 72cc Bare

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The Edelbrock #60509 Performer RPM cylinder head is 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. The Edelbrock #60509 Performer RPM head with the 72cc combustion chamber are for higher compression engines. Performer RPM #60509 is semi-machined and must be finished by a professional cylinder head porter. They include valve guides and seats installed with no intake pushrod holes.

Documents & Installation Notes


Availability Available
Application Application Specific
UPC 00085347605095
Ech Ival Dia (Suggested) 2.11 in
Series Pro-Port
Quantity Sold Individually
Specialty Hot Isostatic Pressing (HIP) Processing
Availability Note Available to Order
Warranty 12 Months
Seat Angle Exhaust 45 deg/Intake 45 deg
Emissions Code
Hazardous Materials Warning WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit
Installation Notes
  • - 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.
  • - These heads require Ram Air IV (round port) style exhaust manifolds or headers
  • - Edelbrock head bolt kit #8549
  • - Deck thickness: 5/8"
  • - Rocker stud diameter: 7/16"
  • - Pushrod diameter: 5/16" (width of slot in guide plate).
CNC Ported No
Combustion Chamber Volume Possible 72 cc
Deck Height 10.250 in
Deck Thickness 0.625 in
Exhaust Valve Diameter (Suggested) 1.46 in. x 1.40 in
Guide Plates Included No
Intake Runner Volume 215.0 cc
Material Aluminum
Push Rod Diameter 0.312 in
Valve Angle 14 deg