[Keithc8]

The CHI heads will cause all sorts of things to be changed from headers to push rods, head bolts, intake manifold, rockers, valve covers, water routing out the front of the head. Not a very easy switch. The best choice is either the Brodix CNC track one that we do or the AFR 205 head that we do. We match the valve job and parts to what you are going to do with the engine as well as the parts used. We only buy the castings from the companies and do our own CNC porting. The 427 C.I. engine can use a pretty good size head and the camshaft would have a lot to do with what you need. Good luck, Keith