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Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete
Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete

Edelbrock Cylinder Head Pontiac Performer D-Port 87cc Chambers for Hydraulic Roller Cam Complete

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  • Manufacturer Part Number: 61575
  • WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. PROP65 INFO
Cylinder Head Specifications: Combustion chamber volume: (A) 65cc / 72cc / 87cc; Intake runner volume: 204cc; Exhaust runner volume: 145cc; Intake valve diameter: 2.11"; Valve stem diameter: 11/32"; Exhaust valve diameter: 1.66"; Valve guides: Manganese bronze; Deck thickness: 5/8"; Valve spring diameter: 1.46"; 120lbs. @ 1.800" Inst. Height; Valve spring maximum lift: .550"; 1.150" Coil Bind; Rocker stud: 7/16"; Guideplate: Hardended steel; Pushrod diameter: 5/16"; Valve angle: 14°; Exhaust port location: Stock; Spark plug fitment: 14mm x 3/4 reach, gasket seat.. Performer Pontiac heads utilize a D-Port exhaust port configuration for use with standard D-port exhaust systems. They are designed for 1962-79 389, 400, 421, 455 cid V8 Pontiac engines with a 4.060in. or larger bore. They feature optimized oil return passages for increased oil flow. These heads are available in three heart shaped combustion chamber sizes, including 65cc, 72cc and 87cc. The 65cc combustion chambers are as-cast while the 72cc and 87cc chambers are fully CNCd to provide a 9.5:1 compression ratios when used with flat-top pistons. The spark plug has been relocated closer to the exhaust valve for improved performance. These heads are cast with extra thick port walls and a compact port size, making them ideal for CNC and hand parting. Complete heads include guide plats, rocker studs and high quality valvetrain for direct bolt-on application. Head crossover machined for 50-state emissions legal performance. INSTALLATION NOTE: 350 c.i.d. engines may require notching the block for valve clearance. Three head bolt bosses are raised higher than the standard D-port heights and will require head bolt kit #8561 to install these heads. Deck thickness: 5/8", rocker stud diameter: 7/16", pushrod diameter: 5/16" (width of slot in guide plate).