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 289-302-351-Windsor Ford engines.
• Maximum performance in the 1500-6500 rpm range for high performance street.
• 1.90" intake valves are for use with stock pistons and high-flow 2.02" intake valves work with pistons notched for valve clearance.
• Hardened pushrods required.
• Will not accept rail rockers.
• 289-302 V8s require Head Bolt Bushings # ED9680

Combustion chamber volume: 60cc
Intake runner volume: 170cc
Exhaust runner volume: 60cc
Intake valve diameter: 1.90"
Exhaust valve diameter: 1.60"
Valve stem diameter: 11/32"
Valve guides: Manganese bronze
Deck thickness: 5/8"
Valve spring diameter: 1.46"
Valve spring maximum lift: .575"
Rocker stud: 3/8"
Guide plate: Hardened Steel
Pushrod diameter: 5/16"
Valve Angle: 20°
Exhaust port location: Stock
Spark plug fitment: 14mm x 3/4" reach, gasket seat
Made In: USA