I have had these pistons over 17 yrs now So i honestly could not tell you. And now haveing been flycut twice for valve clearnce.Im not even a 100% sure what is left of the dome for thickness.I do know it still has at least.225 left of it. ANd I do beleive the dome was like .450 thick.
But like i said YOU COULD NOT SHUT it OFF with out loading the clutch. on 87 oct.

Larry/Twisted6
[oooooo] smile
Adding CFM adds boost smile
shocked God doesn't like ugly.