The Edelbrock #60589 Performer RPM 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.

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Part Type	Engine Cylinder Head
Manufacturer	Edelbrock
Application	Application Specific
UPC	085347605897
Series	Performer RPM
Material	Aluminum
Quantity	Sold Individually
Guide Plate Material	Hardened Steel
Horsepower	450-550 HP
Availability Note	Available to Order
Warranty	12 Months
Seat Angle	Exhaust 45 deg/Intake 45 deg
Emissions Code
Application Summary	Pontiac:-:326 (5.3L)/350 (5.7L)/389 (6.4L)/400 (6.6L)/421 (6.9L)/428 (7.0L)/455 (7.4)
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 www.P65warnings.ca.gov.
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).
Intake Runner Volume	215 cc
Push Rod Diameter	0.312 in
Valve Angle	14 Degree