just got done with the heads and pistons.the pistons held appox. 22.5cc's (dished) and the heads toped off at 65cc's .the block has zero piston to deck height .this is in a 421sbc 4.155 bore by 3.875 stroke JE pistons with 6" rods .running a solid roller xr286r comp cam.with this info what would be the diff.in compression with a .039 versus a .041 head gasket.the heads are dart iron eagle 215's.a little worried about pump gas .PS did this with a veterinary syringe and plexy glass could be a little off.is this enough info. for the dcr.?
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