The Edelbrock #61599 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_INV |
Edelbrock Pontiac Cylinder Head |
| Description_EXT |
Edelbrock part #61599 Performer Pontiac D-Port Cylinder Heads 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. |
| Description_MKT |
The Edelbrock #61599 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_TRA |
EQUIPPED WITH SPRINGS FOR USE IN HYDRAULIC FLAT TAPPET CAMSHAFT APPLICATIONS |
| Description_TRA |
Combustion Chamber: 72cc |
| 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). |
| Description_LAB |
RPM CNC Pontiac D-Port Cylinder Head 72cc Hydraulic Flat Tappet Cam |
| Intake Valve Diameter |
2.11 |
| Seat Material |
Ductile Iron |
| Rocker Arm Stud Diameter |
0.4375 |
| Seat Angle |
Exhaust 45 deg/Intake 45 |
| Valve Stem Diameter |
0.3438 |
| EGR Port |
Yes |
| Valve Springs Included |
Yes |
| Guide Plates Included |
Yes |
| Head Casting Number |
N/A |
| Series |
Performer |
| Valve Spring Diameter |
1.46 |
| Quantity |
Sold Individually |
| Family |
Performer |
| Retainer Included |
Yes |
| Exhaust Port Location |
Standard |
| Material |
Aluminum |
| CNC Ported |
Yes |
| Valve Angle |
14 |
| Combustion Chamber Volume |
72 |
| Valve Included |
Yes |
| Valve Spring Maximum Lift |
0.575 |
| Construction Type |
Complete |
| Horsepower |
400-500 |
| Deck Thickness |
0.625 |
| Exhaust Runner Volume |
145 |
| Exhaust Valve Diameter |
1.66 |
| Intake Runner Volume |
204 |
| Guide Plate Material |
Hardened Steel |
| 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. |
| Camshaft Type |
Flat Tappet |
| Grade Type |
Performance |
| Guide Material |
Manganese Bronze |
| Push Rod Diameter |
(Suggested) 0.3125 |
| Length |
9.0000 |
| Width |
12.0000 |
| Height |
26.0000 |
| Weight |
35.0000 |
