Edelbrock 61035 - SB Oldsmobile Performer RPM Cylinder Heads for Hydraulic Roller Cam
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Description
Description
Edelbrock 61035 - SB Oldsmobile Performer RPM Cylinder Heads for Hydraulic Roller Cam
Cylinder Head - Performer RPM - Assembled - 2.150 / 1.680 in Valves - 200 cc Intake - 68 cc Chamber - 1.450 in Springs - Aluminum - Oldsmobile V8 - Each
For 350-403 c.i. Olds engines with a hydraulic roller cam, these heads are made of 356-T6 aluminum and feature 68 cc chambers, high-flow 200 cc intake and 130 cc exhaust port volumes, and 2.072” intake and 1.680” exhaust valve sizes.
Intended for installation on 1965-1976 Small-Block Oldsmobile 350-403 c.i. engines equipped with a hydraulic roller camshaft, these 356-T6 aluminum casting cylinder heads (#61035) are a modern refinement to our #6051 heads, except they can accommodate a factory-style mechanical fuel pump. A smaller 68 cc combustion chamber achieves a more appropriate small block compression ratio compared to our PN 61025/61029’s larger 77 cc chamber, which yields a lower compression ratio than most engine builders desire on a small block engine. These heads require a 3.9375” minimum bore and feature a modern chamber design with optimized spark plug positioning. Maximum airflow is achieved through the factory 6-degree valve angle using high-flow 200 cc intake and 130 cc exhaust port volumes, along with 2.072” intake and 1.680” exhaust valve sizes in their O.E. positions. A finished deck thickness with added material above the intake port and pre-counterbored head-bolt holes for .5” diameter studs provide extra clamping force in key areas. A stud-and-guide plate valvetrain system (as opposed to the O.E. pedestal type) provides a solid foundation for the beefier diameter pushrods, and Helicoil inserts in the exhaust and rocker stud holes keep bolts secured. However, there are no provisions for a heat crossover. Although these heads will fit on Big-Block Oldsmobile engines, the 68-cc combustion chamber size is not ideal for a big-block application as it will raise compression. See PN61025 and PN61029 for big-block specific cylinder heads.
- Factory 6-degree valve angle
- Maximum compatibility with OEM and aftermarket components
- Mechanical Fuel Pump Clearance Cutout
- Allows the use of an "OEM" style mechanical fuel pump
- OEM Port Locations
- Retains compatibility with OEM and popular aftermarket manifolds and Headers
