Edelbrock 61025 Performer RPM Cylinder Head #61025 BB Oldsmobile, Hydraulic Roller Camshaft
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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.
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.
Specifications
| Quantity | Sold Individually |
| Horsepower | 450-600 HJ |
| Seat Material | Ductile Iron |
| Retainer Included | Yes |
| Push Rod Diameter | (Suggested) 0.375 IN |
| Valve Stem Diameter | 0.3438 IN |
| Rocker Arm Stud Diameter | 0.4375 IN |
| Valve Spring Maximum Lift | 0.600 IN |
| Deck Thickness | 0.625 IN |
| Valve Spring Diameter | 1.105 IN |
| Exhaust Valve Diameter | 1.680 IN |
| Exhaust Runner Volume | 128 CCM |
| Intake Valve Diameter | 2.150 IN |
| Intake Runner Volume | 218 CCM |
| Valve Angle | 6 DD |
| Combustion Chamber Volume | 77 CCM |
| Material | Aluminum |
| Valve Lock Material | Chromoly Steel |
| Guide Plate Material | Chromoly Steel |
| Construction Type | Complete |
| Seat Angle | Exhaust 60 deg/Intake 60 DD |
| Guide Plate Material | Hardened Steel |
| Camshaft Type | Hydraulic Roller |
| Guide Material | Manganese Bronze |
| Head Casting Number | N/A |
| Rocker Arms Included | No |
| Cylinder Head Gasket Included | No |
| Valve Cover Gasket Included | No |
| Mounting Hardware Included | No |
| CNC Ported | No |
| EGR Port | No |
| Grade Type | Performance |
| Family | Performer RPM |
| Series | Performer RPM |
| Exhaust Port Location | Standard |
| Valve Lock Material | 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. |
| Valve Spring Retainers Included | Yes |
| Valve Locks Included | Yes |
| Rocker Arm Studs/Bolts Included | Yes |
| Assembled | Yes |
| Guide Plates Included | Yes |
| Valve Springs Included | Yes |
| Valve Seals Included | Yes |
| Valves Included | Yes |
β οΈ California Proposition 65 Warning
California Residents: This product can expose you to chemicals which are known to the State of California to cause cancer or other reproductive harm. Please visit www.p65warnings.ca.gov for more information.
Warranty: 12 Months
Please check the product description for the manufacturer’s application details, or ask a specialist — we’ll confirm whether it fits your vehicle before you buy.
Shipping Information
Free shipping is available for eligible orders.
Shipping: For USA - Up to 50lbs.
Orders are processed during normal business days. Delivery dates may vary by carrier and destination.
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