The Edelbrock #61559 Performer RPM Marine-Duty cylinder head is designed for use with Rectangular Port Big-Block Chevy Marine applications. The Edelbrock #61559 Performer RPM head is perfect for street performance, daily drivers, street rods and muscle ca
Product Features:- Bare Single With Valves
- 118cc Combustion Chamber Volume
- 315cc Intake/110cc Exhaust Runner Volume
- 2.25 in. Intake/1.89 in. Exhaust Valve Diameter
- 0.562 in. Deck Thickness