The Edelbrock #60539 Performer RPM CNC Bare Cylinder Head has the same specifications as our popular Performer RPM cylinder head for 1962-79 389-455 c.i.d. Pontiac engines, but feature a CNC machined combustion chamber. The CNC machined chamber results in a consistent and precise chamber for improved flow performance. Performer RPM CNC cylinder head is available in two chamber sizes. Performer RPM CNC cylinder head with 72cc chambers are best for higher compression engines. The Edelbrock #60539 Performer RPM CNC cylinder head is patterned after the same port flange configuration as the 1969-1970 Ram-Air IV Pontiac Cylinder Head.
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_MKT |
The Edelbrock #60539 Performer RPM CNC Bare Cylinder Head has the same specifications as our popular Performer RPM cylinder head for 1962-79 389-455 c.i.d. Pontiac engines, but feature a CNC machined combustion chamber. The CNC machined chamber results in a consistent and precise chamber for improved flow performance. Performer RPM CNC cylinder head is available in two chamber sizes. Performer RPM CNC cylinder head with 72cc chambers are best for higher compression engines. The Edelbrock #60539 Performer RPM CNC cylinder head is patterned after the same port flange configuration as the 1969-1970 Ram-Air IV Pontiac Cylinder Head. |
| Description_LAB |
RPM CNC Pontiac Cylinder Head 72cc |
| Description_INV |
Edelbrock Pontiac Cylinder Head |
| Description_EXT |
The Edelbrock #60539 Performer RPM CNC Bare Cylinder Heads have the same specifications as our popular Performer RPM cylinder heads for 1962-79 389-455 c.i.d. Pontiac engines, but feature a CNC machined combustion chamber. |
| 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 |
Features CNC machined combustion chamber for a consistent and precise chamber for improved flow performance and spark plug location |
| Description_TRA |
These heads require Ram Air IV (round port) style exhaust manifolds or headers |
| Description_TRA |
Edelbrock head bolt kit #8549 |
| Description_TRA |
Match with Edelbrock complete head gasket set #7382. |
| Description_TRA |
Deck thickness: 5/8", |
| Description_TRA |
Pushrod diameter: 5/16" (width of slot in guide plate). |
| Guide Plate Material |
Hardened Steel |
| Deck Thickness |
0.625 |
| Valve Springs Included |
No |
| Exhaust Runner Volume |
175 |
| Combustion Chamber Volume |
72 |
| Construction Type |
Bare |
| Head Casting Number |
N/A |
| 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. |
| Guide Material |
Manganese Bronze |
| EGR Port |
No |
| Quantity |
Sold Individually |
| Material |
Aluminum |
| Family |
Performer RPM |
| Intake Runner Volume |
215 |
| Valve Included |
No |
| Exhaust Port Location |
Standard |
| Guide Plates Included |
Yes |
| Series |
Performer RPM |
| Grade Type |
Performance |
| CNC Ported |
Yes |
| Valve Angle |
14 |
| Retainer Included |
No |
| Seat Material |
Ductile Iron |
| Seat Angle |
Exhaust 45 deg/Intake 45 |
| Length |
8.0000 |
| Width |
10.0000 |
| Height |
25.0000 |
| Weight |
36.0000 |
