SKU: SKU: EDE61525
The Edelbrock #61525 Performer RPM CNC 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. The 87cc chamber version is ideal for 9.5:1 engines and will deliver excellent street performance on low octane fuel. The Edelbrock #61525 Performer RPM CNC cylinder head is patterned after the same port flange configuration as the 1969-1970 Ram-Air IV Pontiac Cylinder Head.
Edelbrock part #61525 Performer RPM CNC 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.
| Exhaust Runner Volume | 175 CCM |
| Family | Performer RPM |
| Construction Type | Complete |
| Rocker Arm Stud Diameter | 0.4375 IN |
| Intake Valve Diameter | 2.11 IN |
| Exhaust Valve Diameter | 1.66 IN |
| EGR Port | Yes |
| Quantity | Sold Individually |
| Horsepower | 450-600 HJ |
| Retainer Included | Yes |
| Valve Spring Diameter | 1.46 IN |
| Valve Spring Maximum Lift | 0.575 IN |
| CNC Ported | Yes |
| Exhaust Port Location | Standard |
| Series | Performer RPM |
| Valve Stem Diameter | 0.3438 IN |
| Push Rod Diameter | (Suggested) 0.3125 IN |
| Deck Thickness | 0.625 IN |
| Valve Angle | 14 DD |
| Seat Angle | Exhaust 45 deg/Intake 45 DD |
| Camshaft Type | Hydraulic Roller |
| Seat Material | Ductile Iron |
| Guide Material | Manganese Bronze |
| 30 | No |
| 8788 | Yes |
| 10024 | Yes |
| 8789 | Yes |
| 10025 | Yes |
| 10252 | Chromoly Steel |
| 10583 | No |
| 10261 | No |
| 10671 | Yes |
| 10 | Aluminum |
| 306 | Yes |
| 6627 | 215 CCM |
| 6635 | 31-6152 |
| 6634 | Yes |
| 6636 | Chromoly Steel |
| 3390 | Performance |
| 6621 | 10.25 IN |
| 10582 | No |
| 6626 | 87 CCM |
| 9799 | Yes |
| Valve Lock Material | Steel |
| Guide Plate Material | Hardened Steel |
California Prop 65 Warning: 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.