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