Hydraulic Roller Camshaft
- For hydraulic roller camshaft applications
- Refined bowl blending for improved flow output
- Compatible with factory-style mechanical fuel pumps
- Spark plug location angle is moved slightly towards the exhaust valve for better combustion
- Extra material is added above the intake port for, if necessary, machine work
- Guide Plate Material: Hardened Steel
- Seat Angle: 60-degree Exhaust/Intake
- Deck Thickness: 0.625 in.
- Intake Runner Volume: 218cc
- Pushrod Diameter: 0.375 in. (suggested)
- Rocker Stud Diameter: 0.4375 in.
- Valve Angle: 6-degree
- Valve Spring Diameter: 1.105 in.
- Valve Stem Diameter: 0.3438 in.
- Intended for installation on 1965-1976 Oldsmobile 400/425/455 ci big block engines with a deck height of 10.625 in.
- COmpatible with Oldsmobile small block engines, however, the 77cc chamber size will lower compression and is not ideal for performance
- 61025 supersedes 60515 Oldsmobile Cylinder Head
Street Performance Cylinder Heads
Edelbrock Performer RPM Aluminum Cylinder Heads for the Big Block Oldsmobile is the ideal upgrade for street-oriented hot rods and muscle cars. These cylinder heads have been redesigned from the previous version with improved combustion chambers, larger intake valves, and refined bowl blending for increased flow, efficiency, and power output. Each comes with pre-installed high-quality intake and exhaust valves and valve springs.
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.