CYLINDER HEADS
Pontiac 389-455 Edelbrock Performer Aluminum Cylinder Heads
EDE60579
The Performer cylinder heads are patterned after the 1969-70 Ram Air IV (round exhaust port) Pontiac head for outstanding performance gains from 1962-79 389-455 engines. They feature a 72cc combustion chamber for high-compression engines, or an 87cc chamber designed to maximize performance while using low-octane fuel with a 9.5:1 compression ratio. Deck thickness 5/8", rocker studs 7/16", pushrods 5/16". 50-state emissions legal. Sold individually.
Intake Runner 215cc 215cc 215cc
Combustion Chamber
Valve Angle
Intake Valve 2.110" 2.110" 2.110"
Exhaust Valve 1.660" 1.660" 1.660"
Part No.
Description
EDE60575
Assembled, 1.460" Springs, Hydraulic Roller
87cc 87cc 72cc
14 14 14
EDE60579 Assembled, 1.460" Springs, Hydraulic Flat Tappet
EDE60595
Assembled, 1.460" Springs, Hydraulic Roller
Edelbrock Performer D-Port Aluminum Cylinder Head The Edelbrock Performer D-Port cylinder head utilizes a D-Port exhaust port designed for 1962-79 389, 400, 421, 428, and 455 C.I.D. Pontiac engines with a 4.060" or larger bore.
Optimized oil return passages allow for increased oil flow, and the spark plug has been relocated closer to the exhaust valve for improved performance. Extra-thick port walls and a compact port size are ideal for CNC and hand porting. 50-state emissions legal. Sold individually.
Intake Runner 204cc
Combustion Chamber
Valve Angle
Intake Valve 2.110"
Exhaust Valve 1.660"
Part No.
Description
EDE61575
Assembled, 1.460" Springs, Hydraulic Roller
87cc
14
Edelbrock RPM Aluminum Cylinder Heads The Performer RPM cylinder heads are patterned after the 1969-70 Ram Air IV (round exhaust port) Pontiac head for outstanding performance gains from 1962-79 389-455
engines. A 72cc chamber helps maximize horsepower (450-550 HP) and performance from 1500-6500 RPM in high-com- pression engines. Deck thickness 5/8", rocker studs 7/16", pushrods 5/16". 50-state emissions legal. Sold individually.
Intake Runner 215cc 215cc
Combustion Chamber
Valve Angle
Intake Valve 2.110" 2.110"
Exhaust Valve 1.660" 1.660"
Part No.
Description Bare Head
EDE60589 EDE60599
72cc 72cc
14 14
Assembled, 1.460" Springs, Hydraulic Roller
Edelbrock RPM CNC Aluminum Cylinder Heads The Edelbrock RPM CNC Cylinder Head has the same specifications as the Performer RPM with the addition of a CNC-machined combustion chamber. The CNC-machined chamber provides a consistent improved flow with less turbulence. Sold individually.
Intake Runner 215cc 215cc
Combustion Chamber
Valve Angle
Intake Valve 2.110" 2.110"
Exhaust Valve 1.660" 1.660"
Part No.
Description
EDE61515 EDE61525
Assembled, 1.460" Springs, Hydraulic Roller Assembled, 1.460" Springs, Hydraulic Roller
72cc 87cc
14 14
Edelbrock Performer RPM CNC Pontiac D-Port Cylinder Heads The RPM CNC Pontiac D-Port cylinder heads utilize the original D-port exhaust port configuration. Designed for 1962-79 389, 400, 421, 428, and 455 engines with a 4.060" or larger bore. They feature extra-thick port walls and a compact port size, making them
ideal for CNC and hand porting. The optimized oil return passages and spark plug relocated closer to the exhaust valve fur- ther enhance performance. Heat crossover is machined achieve 50-state emissions legal performance. Sold individually.
Intake Runner 204cc 204cc 204cc 204cc
Combustion Chamber
Valve Angle
Intake Valve 2.110" 2.110" 2.110" 2.110"
Exhaust Valve 1.660" 1.660" 1.660" 1.660"
Part No.
Description Bare Head
EDE61569 EDE61579 EDE61595 EDE61599
87cc 87cc 72cc 72cc
14 14 14 14
Assembled, 1.460" Springs, Hydraulic Flat Tappet Assembled, 1.460" Springs, Hydraulic Roller Assembled, 1.460" Springs, Hydraulic Flat Tappet
480 2021-22 ENGINE BUILDER CATALOG
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