Building a new 505 With Callies / Mopar Performance Block

Bobzilla said

Are you checking the radial valve clearance too? Curious how much it will have on those pistons in this combo.

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Good advice...I'd probably loosely bolt the head on without a gasket and go to zero lash and see how the radial 'imprints' some clay. I doubt your ICL will ever want to be lower than 108ish and the intake p2v will only get better further retarded.