Performer RPM Chrysler 440 Cylinder Heads - Single - Complete Big Block Chrysler, 88cc chambers, great torque and horsepower up to 6500 rpm

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 1961-79 Chrysler 361-440 Wedge engines.
• Flow 291 cfm on the intake and 217 cfm on the exhaust at .600" lift.
• Angled spark plugs for superior combustion.
• 88cc chambers are machined .100" for clearance with quench dome style pistons.

Combustion chamber volume: 88cc
Intake runner volume: 210cc
Exhaust runner volume: 70cc
Intake valve diameter: 2.140"
Exhaust valve diameter: 1.81"
Valve stem diameter: 11/32"
Valve guides: Manganese bronze
Deck thickness: 5/8"
Valve spring diameter: 1.55"
Valve spring maximum lift: .600"
Rocker stud: N/A
Guide plate: N/A
Pushrod diameter: 3/8"
Valve Angle: 15°
Exhaust port location: Stock
Spark plug fitment: 14mm x 3/4" reach, gasket seat
Made In: USA