ED60549 - EDELBROCK PERFORMER RPM CYLINDER HEAD FITS BIG BLOCK CHEV BARE EACH

Performer RPM heads are perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. These heads give great torque and horsepower up to 6500 rpm.

• Designed for street/high-performance big-blocks operating from 2500-7000 rpm.
• Specially designed ports for increased flow and velocity over standard big-block heads.
• Highly-efficient 118cc open-style combustion chamber.
• High-velocity 315cc long/300cc short intake ports.
• Smaller-than-stock 11/32" valve stems promote excellent flow and lighter valve weight.
• Bare heads will have valve guides & seats installed, but will require final sizing & a valve job to match the valves you will be using.

Combustion chamber volume: 118cc
Intake runner volume: 315cc
Exhaust runner volume: 110cc
Intake valve diameter: 2.19" - Not Included
Exhaust valve diameter: 1.88" - Not Included
Valve stem diameter: 11/32"
Valve guides: Manganese bronze
Deck thickness: 9/16"
Valve spring diameter: 1.55" - Not Included
Valve spring maximum lift: .700" - Not Included
Rocker stud: 7/16" - Not Included
Guideplate: Hardened Steel - Not Included
Pushrod diameter: 3/8"
Valve Angle: 26˝
Exhaust port location: Stock
Spark plug fitment: 14mm x 3/4" reach, gasket seat
Made In: USA