Edelbrock - 60739
Cylinder Head - Performer RPM - Assembled - 2.020 / 1.600 in Valve - 185 cc Intake - 70 cc Chamber - 1.460 in Springs - Straight Plug - Aluminum - Small Block Chevy - Each
The Edelbrock #60739 Performer RPM cylinder heads are designed for 1955-86 Small-Block Chevy engines. The #60739 Performer RPM heads are perfect for street performance, daily drivers and muscle cars where more performance is needed.
Cylinder Head Specifications: Combustion chamber volume: 65cc / 70cc; Intake runner volume: 185cc & 195cc; Exhaust runner volume: 65cc; Intake valve diameter: 2.02"; Exhaust valve diameter: 1.60"; Valve stem diameter: 11/32"; Valve guides: Maganese Bronze; Deck thickness: 9/16"; Valve spring diameter: 1.46"; Valve spring maximum lift: .575"; Rocker stud: 3/8"; Guideplate: Hardened steel; Pushrod diameter: 5/16"; Valve angle: 23°; Exhaust port location: Stock; Spark plug fitment: 14mm x .750 reach, gasket seat. * Performer RPM Cylinder Heads have all of the same great features as our Performer series heads, but are available with straight or angled spark plug configuration to fit a variety of exhaust applications. Available with a polished finish for a show quality look! ** Match with Edelbrock head gasket sets. Bare heads will have valve guides and seats installed, but will require final sizing and a valve job to match the valves you will be using. To use stock rockers on small-block Chevy heads, .100" longer than stock pushrods are required. Edelbrock pushrods #9629 are recommended. Use Head Bolt Kits for easy installation. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. S/B Chevy heads may not be used on engines with less than 4" bore (262, 265, 283, 305, 307 c.i.d.) except with cams having less than .450" valve lift.
- Out-of-the-Box Bolt-On Performance
- With Straight Plugs
- 70cc Combustion Chambers Improve Performance
- Retain Stock Compression Ratio
