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:
| Description_ABR |
Cyl. Head |
| Description_ASM |
Pontiac:-:326 (5.3L)/350 (5.7L)/389 (6.4L)/400 (6.6L)/421 (6.9L)/428 (7.0L)/455 (7.4) |
| Description_DEF |
Engine Cylinder Head |
| Description_EXT |
Edelbrock part #61579 Performer Pontiac D-Port Cylinder Heads 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. |
| Description_INV |
Edelbrock Pontiac Cylinder Head |
| Description_MKT |
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. |
| Description_LAB |
RPM CNC Pontiac D-Port Cylinder Head 87cc Hydraulic Flat Tappet Cam |
| Description_TRA |
EQUIPPED WITH SPRINGS FOR USE IN HYDRAULIC FLAT TAPPET CAMSHAFT APPLICATIONS |
| Description_TRA |
Combustion Chamber: 87cc |
| Description_TRA |
350 c.i.d. engines may require notching the block for valve clearance. |
| Description_TRA |
Three head bolt bosses are raised higher than the standard D-port heights and will require head bolt kit #8561 to install these heads. |
| Description_TRA |
Deck thickness: 5/8" |
| Description_TRA |
Rocker stud diameter: 7/16" |
| Description_TRA |
Pushrod diameter: 5/16" (width of slot in guide plate). |
| Retainer Included |
Yes |
| Horsepower |
400-500 |
| EGR Port |
Yes |
| Valve Spring Diameter |
1.46 |
| Exhaust Port Location |
Standard |
| Valve Spring Maximum Lift |
0.575 |
| Intake Runner Volume |
204 |
| Combustion Chamber Volume |
87 |
| Valve Springs Included |
Yes |
| Grade Type |
Performance |
| Seat Material |
Ductile Iron |
| RGL |
WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov. |
| Head Casting Number |
N/A |
| Guide Plates Included |
Yes |
| Construction Type |
Complete |
| Seat Angle |
Exhaust 45 deg/Intake 45 |
| Valve Included |
Yes |
| CNC Ported |
Yes |
| Camshaft Type |
Flat Tappet |
| Rocker Arm Stud Diameter |
0.4375 |
| Family |
Performer |
| Guide Plate Material |
Hardened Steel |
| Valve Angle |
14 |
| Quantity |
Sold Individually |
| Intake Valve Diameter |
2.11 |
| Valve Stem Diameter |
0.3438 |
| Series |
Performer |
| Material |
Aluminum |
| Push Rod Diameter |
(Suggested) 0.3125 |
| Deck Thickness |
0.625 |
| Guide Material |
Manganese Bronze |
| Exhaust Runner Volume |
145 |
| Exhaust Valve Diameter |
1.66 |
| Length |
9.0000 |
| Width |
12.0000 |
| Height |
26.0000 |
| Weight |
36.0000 |
