Edelbrock 61575 Performer Pontiac D-Port Cylinder Head 87cc Hydraulic Roller Springs

Rated for 400-500 horsepower, the Edelbrock #61575 Performer is a complete, assembled aluminum cylinder head for 1962-79 Pontiac V8 engines (389, 400, 421, 428, 455 c.i.d.) with a 4.060-inch or larger bore. This head features a D-Port exhaust configuration and includes valves, valve springs, seals, locks, retainers, guide plates and rocker arm studs, along with optimized oil return passages for increased oil flow and a heat crossover machined for 50-state emissions compliance. The spark plug location has been repositioned closer to the exhaust valve for better performance, and the extra-thick port walls combined with compact port sizing accommodate CNC porting or hand porting work.

• Push Rod Diameter: (Suggested) 0.3125 IN
• Valve Angle: 14 deg
• Series: Performer
• Family: Performer
• Valve Spring Diameter: 1.46 IN
• CNC Ported: Yes
• Exhaust Port Location: Standard
• Seat Material: Ductile Iron
• Deck Thickness: 0.625 IN
• Intake Valve Diameter: 2.11 IN
• Seat Angle: Exhaust 45 deg/Intake 45 deg
• Guide Material: Manganese Bronze
• Camshaft Type: Hydraulic Roller
• Horsepower: 400-500 HJ
• Exhaust Valve Diameter: 1.66 IN
• Construction Type: Complete
• Rocker Arm Stud Diameter: 0.4375 IN
• EGR Port: Yes
• Quantity: Sold Individually
• Retainer Included: Yes
• Valve Spring Maximum Lift: 0.575 IN
• Valve Springs Included: Yes
• Mounting Hardware Included: No
• Material: Aluminum
• Intake Runner Volume: 204 CCM
• Head Casting Number: 31-6156
• Guide Plates Included: Yes
• Guide Plate Material: Hardened Steel
• Grade Type: Performance
• Deck Height: 10.25 IN
• Cylinder Head Gasket Included: No
• Combustion Chamber Volume: 87 CCM
• Assembled: Yes
• Valves Included: Yes
• Valve Lock Material: Steel
• 9040: D-215-94
• Exhaust Runner Volume: 145 CCM
• Valve Stem Diameter: 0.3438 IN
• Valve Spring Retainers Included: Yes
• Valve Seals Included: Yes
• Valve Locks Included: Yes
• Valve Cover Gasket Included: No
• Rocker Arms Included: No
• Rocker Arm Studs/Bolts Included: Yes
• Guide Plate Material: Chromoly Steel