RHS Raised Runner 23 Degree Cast Iron Cylinder Head
The best flowing 23 degree style heads available for maximum horsepower applications.
Intake air flow in the 330 cfm range with over 220 cfm on the exhaust side.
The intake flange is raised .600″ achieving a better flow angle into the cylinder. Angle milled from the factory to a 21 degree valve angle, allowable by most sanctioning bodies where the original valve angle is required. Warning: These heads are real hand-full to work with. They require shaft rockers, .600″ longer valve, a custom fit aluminum intake that needs a lot work to fit these heads and a lot of time vs. a ported set of Dart Iron Eagle Platinum heads.
CNC Sportsman Ported RHS 23 degree raised runner castings, bare. pair.