Building a new 505 With Callies / Mopar Performance Block
Exhaust valve to piston clearance at the tightest point is .215. I use a degree wheel when I and check the valve to piston clearance. I check valve to piston clearance every two degrees from 30 degrees before until thirty degrees after. I measured it with a dial indicator using checking springs. I really do not like using the clay method.
I have used both methods and prefer a dial indicator. Valve lash set at .020. Using a Felpro .039 setup head gasket. I will check the valve to piston clearance on the intake valve tomorrow.