Edelbrock S/B Chevy 350 Performer RPM E-Tec 64cc 170cc BARE Aluminum Cylinder Heads 60959

Edelbrock S/B Chevy 350 Performer RPM E-Tec 64cc 170cc BARE Aluminum Cylinder Heads 60959

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Quick Overview

Combustion chamber volume: 64cc
Intake runner volume: 170cc
Exhaust runner volume: 70cc
Intake valve diameter: 1.94"
Exhaust valve diameter: 1.55"
Valve stem diameter: 11/32"
Valve guides: Maganese bronze
Deck thickness: 5/8"
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

Bare (Single) - Satin Finish

INSTALLATION NOTE: 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. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. Use Head Bolt Kits for easy installation. 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.


Edelbrock E-Tec Cylinder Heads are replacements for 302, 327, 350 & 400 c.i.d. S/B Chevy engines with "Vortec-style" manifolds. They feature an LT1-style raised runner intake port design for increased air-flow and ultimate performance. A unique combustion chamber design positions the spark plug closer to the center of the cylinder, promoting a more efficient combustion resulting in more power. These cylinder heads include an adjustable rocker stud and guide plate set-up for use with adjustable rockers or washers to properly position the stud height to accommodate factory style self-aligning rocker arms. They have 20% more exhaust flow than cast iron Vortec heads, great performance up to 6000 rpm and can produce 9.5:1 compression with stock pistons in 350 cubic-inch engines. RPM E-Tec heads are dual-drilled and will accept 1987-95 centerbolt and/or 1986 & prior perimeter flange mount valve covers and most stock exhaust manifolds. E-Tec 170 heads are 50-state street legal.

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