Shredder Cylinder Head - Level II - For GX200 and Clones - Predator - Wildcat - Ducar

-ALL NEW CNC PORTED INTAKE! - REPLACES RPM+ AND STAGE 1 -  Our Level II Shredder head fits all GX200, Clones, Predator 212/224/Ghost, Wildcat, Tillotson, Ducar, and other small block GX engines. This port has been in development for the last six months and outperforms our previous Stage 1 offering by 15%.  The CNC machined and hand finished intake port flows an average of 96CFM from .300" to .450" lift. This port has been optimized for maximum port velocity and flow. It does not need any additional port work.  Valves are long enough to tolerate up to .440" lift and springs will control up to 9,000rpms.  The exhaust port has been hand ported and flows 80cfm. It will not benefit from a larger valve, only cost you some power. It needs at least a 1" exhaust header, and the exhaust flange has a 47mm bolt spacing, so you might need to enlarge the lower hole on your pipe just a bit to get it to bolt up. This is the same bolt spacing as the Predator 224 non-hemi exhaust flange.  Recommend carb