Description

For 1962-79 389 400 421 428 and 455 c.i.d. V8 Pontiac engines with a 4.060" or larger bore The Edelbrock #61579 Performer Pontiac Cylinder Head utilize a D-Port exhaust port configuration for use with standard D-port exhaust systems. They are designed for 1962-79 389 400 421 428 and 455 c.i.d. V8 Pontiac engines with a 4.060" or larger bore. They feature optimized oil return passages for increased oil flow. The spark plug has been relocated closer to the exhaust valve for improved performance. This head is cast with extra thick port walls and a compact port size making them ideal for CNC and hand porting. Complete cylinder head includes guide plates rocker studs and high quality valvetrain for direct bolt-on application. Heat crossover is machined for 50-state emissions legal performance.

• Specifications

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