Valve Clearance - GT-40 Heads

[Prdbyford1]

I have been thinking about picking up a set of GT-40 heads that have been ported and had larger Manley stainless valves installed at 1.9 intake and 1.6 exhaust. Will these clear the notches in the stock pistons?

 

[LAFENATU]

Yeah they should no problem. If they are indeed 1.90-1.94/1.60 valves I would clay the heads anyways since they are no longer stock valve size but like I said, it should not be a problem.