CYL HEAD BB OLDSMOBILE PERF RPM FOR HYD ROLLER CAM COMPETE
CYL HEAD BB OLDSMOBILE PERF RPM FOR HYD ROLLER CAM COMPETE
SKU:EDL 61025
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Brand New Edelbrock Performer RPM Cylinder Head for 1965-1976 Oldsmobile Big Block 400-455 CID V8 with 10.62" Deck & Hydraulic Roller Cam (Part #61025).
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.
- Equipped with springs for use in hydraulic roller camshaft applications
- Intended for installation on 1965-76 Oldsmobile 400-455 CID big-block engines with a deck height of 10.625 inches
- These heads will fit on Oldsmobile small-block engines but the 77cc chamber size will lower compression and is not ideal for performance.
Specs:
- Material: Aluminum
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Horsepower: 450-600 HP
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Seat Angle: Exhaust 60 deg/Intake 60 deg
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Intake Valve Diameter: 2.15 in
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Intake Runner Volume: 218 cc
- Push Rod Diameter: 0.375 in
- Rocker Stud Diameter: 0.4375 in
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Valve Angle: 6 deg
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Valve Spring Diameter: 1.105 in
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Valve Spring Maximum Lift: 0.6 in
- Valve Stem Diameter: 0.3438 in
- Deck Thickness: 5/8"