Piston to Head Clearance Input

[Daveyjonez]

Hello All:

I have read through a few of these threads, need some input on what I have:

4 inch stroke, 3 5/16 bore w/ Ross Pistons, Brand New Navarro Heads and New Best Graphtite Gaskets. New ARP Studs.

Aluminum Foil at sides and center of piston- torque to 40 lbs:

Clearance Middle = .120
Edge of Piston = .075

It seems compression would be way down. How much should I take off the heads??

Thanks Guys,
Dave