The Edelbrock #60509 Performer RPM cylinder head is designed for outstanding performance gains in 1962-79 389-455 c.i.d. Pontiac engines. They are patterned after the 1969-70 Ram Air IV Pontiac cylinder head. The Edelbrock #60509 Performer RPM head with the 72cc combustion chamber are for higher compression engines. Performer RPM #60509 is semi-machined and must be finished by a professional cylinder head porter. They include valve guides and seats installed with no intake pushrod holes.
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 |
The Edelbrock #60509 Performer RPM cylinder heads are designed for outstanding performance gains in 1962-79 389-455 c.i.d. Pontiac engines. They are patterned after the 1969-70 Ram Air IV Pontiac cylinder head. |
| Description_MKT |
The Edelbrock #60509 Performer RPM cylinder head is designed for outstanding performance gains in 1962-79 389-455 c.i.d. Pontiac engines. They are patterned after the 1969-70 Ram Air IV Pontiac cylinder head. The Edelbrock #60509 Performer RPM head with the 72cc combustion chamber are for higher compression engines. Performer RPM #60509 is semi-machined and must be finished by a professional cylinder head porter. They include valve guides and seats installed with no intake pushrod holes. |
| Description_INV |
Edelbrock Pontiac Cylinder Head |
| Description_LAB |
RPM Pro Port Pontiac Cylinder Head 72cc Bare |
| Description_TRA |
Bare heads will have valve guides and seats installed, but will require final sizing and a valve job to match the valves you will be using. |
| Description_TRA |
These heads require Ram Air IV (round port) style exhaust manifolds or headers |
| Description_TRA |
Edelbrock head bolt kit #8549 |
| 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). |
| Valve Angle |
14 |
| Valve Spacing |
2.030 |
| Family |
Performer RPM |
| Deck Thickness |
0.625 |
| Intake Port Entry |
1.10 in x 2.02 |
| Exhaust Valve Diameter |
(Suggested) 1.46 in x 1.40 |
| Exhaust Port Entry |
1.46 in x 1.40 |
| Quantity |
Sold Individually |
| Valve Springs Included |
No |
| 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. |
| Series |
Pro-Port |
| Head Casting Number |
N/A |
| Construction Type |
Pro-Port Raw |
| Valve Seats Included |
Yes |
| Guide Plates Included |
No |
| Exhaust Valve Pierce Points (X,Y)(C) |
1.150 in, 0.000 |
| Combustion Chamber Volume |
Possible 72 |
| Guide Material |
Manganese Bronze |
| Seat Angle |
Exhaust 45 deg/Intake 45 |
| Material |
Aluminum |
| Retainer Included |
No |
| Valve Included |
No |
| Grade Type |
Performance |
| Intake Valve Diameter |
(Suggested) 2.11 |
| Specialty |
Hot Isostatic Pressing (HIP) Processing |
| EGR Port |
No |
| Valve Guides Included |
Yes |
| Intake Valve Pierce Points (X,Y)(C) |
0.880 in, 0.000 |
| CNC Ported |
No |
| Length |
9.0000 |
| Width |
11.0000 |
| Height |
26.0000 |
| Weight |
31.0000 |
