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Edelbrock

Cylinder Head, Performer RPM, 1962-77 Pontiac 389-455, 72cc, Bare, Semi-finished

Vehicle Specific View fitment for 6 models
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Part# G242607
Mfg# 60509
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$929.99
List Price: $1,023.95
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The Edelbrock Performer RPM Pro Port bare 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 and have 215cc intake ports 175cc exhaust ports and 72cc combustion chambers. These heads are semi-machined with valve guides and seats installed, but must be finished by a professional cylinder head porter. The ports are as cast which leaves room for them to work their magic. The intake pushrod hole location is left up to them as well so the desired location can be placed. 12 Month Warranty.

Tech Specs Deck Thickness: 0.625 in Deck Height: 10.250 in Intake Runner Volume: 215cc Exhaust Runner Volume: 175cc Combustion Chamber Volume: possible 72cc Valve Angle: 14 degrees Suggested Intake Valve Diameter: 2.11 in Suggested Exhaust Valve Diameter: 1.46 in. x 1.40 in Seat Angle: Exhaust 45 deg/Intake 45 deg Pushrod Diameter: 5/16" Drilled and tapped for 7/16-14 Rocker stud

Notes

  • Note1: Use 14mm x 3/4” reach gasketed spark plugs such as RC12YC or equivalent.
  • This item is not eligible for any further discounts or promotional pricing.
  • SHIP NOTE: This item is SPECIAL ORDER and will drop-ship from the manufacturer. While the majority of drop ship orders experience no delays, please be advised that OPGI does not control delivery times.
3
This product is not legal for street use on an emissions-controlled vehicle. It may be used on dedicated competition or pre-pollution-controlled vehicles only. Learn More

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  • 2023 Grand Prix 1962-77 189
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model Application Details
1962–1977 Pontiac Bonneville  
1962–1977 Pontiac Catalina  
1962–1977 Pontiac Grand Prix  
1964–1973 Pontiac GTO  
1962–1973 Pontiac LeMans  
1962–1970 Pontiac Tempest  
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Cylinder Head, Performer RPM, 1962-77 Pontiac 389-455, 72cc, Bare, Semi-finished
Edelbrock Cylinder Head, Performer RPM, 1962-77 Pontiac 389-455, 72cc, Bare, Semi-finished