Page 482 - 2021-22_EngineCatalogAP

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.
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.
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.
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.
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.
Part No.
Description
Intake Runner
Combustion Chamber
Valve Angle
Intake Valve
Exhaust Valve
EDE60575
Assembled, 1.460" Springs, Hydraulic Roller
215cc
87cc
14
2.110"
1.660"
EDE60579
Assembled, 1.460" Springs, Hydraulic Flat Tappet
215cc
87cc
14
2.110"
1.660"
EDE60595
Assembled, 1.460" Springs, Hydraulic Roller
215cc
72cc
14
2.110"
1.660"
Part No.
Description
Intake Runner
Combustion Chamber
Valve Angle
Intake Valve
Exhaust Valve
EDE61575
Assembled, 1.460" Springs, Hydraulic Roller
204cc
87cc
14
2.110"
1.660"
Part No.
Description
Intake Runner
Combustion Chamber
Valve Angle
Intake Valve
Exhaust Valve
EDE60589
Bare Head
215cc
72cc
14
2.110"
1.660"
EDE60599
Assembled, 1.460" Springs, Hydraulic Roller
215cc
72cc
14
2.110"
1.660"
Part No.
Description
Intake Runner
Combustion Chamber
Valve Angle
Intake Valve
Exhaust Valve
EDE61515
Assembled, 1.460" Springs, Hydraulic Roller
215cc
72cc
14
2.110"
1.660"
EDE61525
Assembled, 1.460" Springs, Hydraulic Roller
215cc
87cc
14
2.110"
1.660"
Part No.
Description
Intake Runner
Combustion Chamber
Valve Angle
Intake Valve
Exhaust Valve
EDE61569
Bare Head
204cc
87cc
14
2.110"
1.660"
EDE61579
Assembled, 1.460" Springs, Hydraulic Flat Tappet
204cc
87cc
14
2.110"
1.660"
EDE61595
Assembled, 1.460" Springs, Hydraulic Roller
204cc
72cc
14
2.110"
1.660"
EDE61599
Assembled, 1.460" Springs, Hydraulic Flat Tappet
204cc
72cc
14
2.110"
1.660"
480 2021-22 ENGINE BUILDER CATALOG
PONTIAC V8 326-455