440 kit head on a 558
The head cracked between the water jacket and timing chain on my predator, not sure if its repairable. I put a 558 big bore in it years ago. Was thinking about picking up a used 440 kit head to replace. Has anyone heard if/how a 440 kit head will run with a 558 big bore?
2003 Predator. HPD 558 big bore kit, thin head gasket-13:1 compression, HPD valve springs, Mikuni 45mm pumper w/ twist throttle custom jetted by Nicholas Cycle, Nicholas cycle head porting, Vortex programmable CDI, Pure Polaris slip on open ended, UNI clamp on.