SKU: SKU: EDE61025
The Edelbrock #61025 Performer RPM Cylinder Head for 1965-76 Oldsmobile 400, 425 and 455 CID V8 engines with hydraulic roller cam is a perfect performance upgrade for big-block Olds-powered street machines and muscle cars. This aluminum cylinder head supersedes the 60515 Olds head and features a redesigned 77cc combustion chamber, larger intake valves and refined bowl blending for improved flow. The #61025 Performer RPM head has improved accommodation for a factory-style mechanical fuel pump with spark plug locations moved slightly towards the exhaust valve for optimized combustion. Intake and exhaust ports have been improved over previous designs, and extra material has been added above the intake port for head work. Performer RPM #61025 heads are cast and machined by Edelbrock in the USA and comes complete with the highest quality intake and exhaust valves and valve springs.
The Edelbrock #61025 Performer RPM Cylinder Head for 1965-76 Oldsmobile 400, 425 and 455 CID V8 engines is a perfect performance upgrade for big-block Olds-powered street machines and muscle cars.
| Push Rod Diameter | (Suggested) 0.375 IN |
| Deck Thickness | 0.625 IN |
| Valve Angle | 6 DD |
| Seat Angle | Exhaust 60 deg/Intake 60 DD |
| CNC Ported | No |
| Rocker Arm Stud Diameter | 0.4375 IN |
| 10671 | Yes |
| 8788 | Yes |
| 10024 | Yes |
| 8789 | Yes |
| 10025 | Yes |
| 10252 | Chromoly Steel |
| 10583 | No |
| 10261 | No |
| 10 | Aluminum |
| 30 | No |
| 6627 | 218 CCM |
| 6634 | Yes |
| 6636 | Chromoly Steel |
| 3390 | Performance |
| 10582 | No |
| 6626 | 77 CCM |
| 306 | Yes |
| Quantity | Sold Individually |
| Horsepower | 450-600 HJ |
| Seat Material | Ductile Iron |
| Retainer Included | Yes |
| Exhaust Port Location | Standard |
| Series | Performer RPM |
| Exhaust Valve Diameter | 1.680 IN |
| Camshaft Type | Hydraulic Roller |
| Head Casting Number | N/A |
| Guide Material | Manganese Bronze |
| Family | Performer RPM |
| Construction Type | Complete |
| Intake Valve Diameter | 2.150 IN |
| Valve Spring Diameter | 1.105 IN |
| Valve Spring Maximum Lift | 0.600 IN |
| EGR Port | No |
| Exhaust Runner Volume | 128 CCM |
| Valve Stem Diameter | 0.3438 IN |
| 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.