Edelbrock 60515 Performer RPM Cylinder Head, Oldsmobile 350-455
350 Oldsmobile V8, 400 Oldsmobile V8, 403 Oldsmobile V8, 425 Oldsmobile V8, 455 Oldsmobile V8
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- Out-of-the-Box Bolt-On Performance
- Hand-Blended Intake and Exhaust Bowls
- CNC-Matched Intake/Exhaust Ports in Std Location
- Thicker Deck Surfaces than Other Brands
EQUIPPED WITH SPRINGS FOR USE IN HYDRAULIC ROLLER CAMSHAFT APPLICATIONS
Head bolt holes drilled for stock 7/16" bolts, but can be easily modified for 1/2" bolts or studs by drilling the 1/2" counter bore. Aftermarket 7/16"-stud rocker arms and 3/8" hardened pushrods required. Will fit 350-403 Olds with Edelbrock manifold #7111 only (port matching required). Match with Edelbrock head gasket sets. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. Deck thickness: 5/8", rocker stud diameter: 7/16", pushrod diameter: 3/8" (width of slot in guide plate).
Performer RPM Olds Features:
- Cylinder Heads designed for high-performance non-emission 1965-76 Olds 400, 425 and 455 c.i.d. V8's
- Heart shaped chamber for a more efficient burn, outstanding horsepower and torque
- Valvetrain has been upgraded from the factory pedestal-mount system to an ARP 7/16" screw-in stud and 3/8" pushrod-slot guideplate for increased valvetrain stability
- #60517 is not port matched or bowl blended and is NHRA-accepted for Super Stock (except 1968-1969 W-30) only.
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Q & A
Tim talks about the new Edelbrock powder coated cylinder heads and provides a little history on Federal Mogul heads.
Tim shows off our aluminum cylinder heads for 348-409 Chevys.
In part 2, you will read about the Generation 4 small block series of V8s that share the same platform as the Generation 3 discussed in part 1.
Trying to decide which power plant to use in your latest project? Here's a quick guide of modern V8 engines for hot rodders to consider.
Illustration showing the various styles of engine heads you may encounter on the Small Block Chevy engine.
Engine Cylinder Numbers
Tim M. has tried to stay true to the vintage route, but sometimes, exceptions must be made. For example, the original oiling system's paper element and canister are functional, but an upgraded system will be more reliable.