Quote Originally Posted by DonChichoJr. View Post
How Much Can Are Able To Mill The Head ??, Using 93 Octane Gas & 30 Degrees Timing ? On That 1990, 3.000 Bore Size Pistons .

.020" Or Maybe .030" ??

Regards,
Don
Theres is little clearance to begin with & I suspect that may vary a little so a fixed # I wouldnt venture. Best bet is to putty test the clearance you have & go from there. If it hits without the head gasket its too close. If you go oversized pistons watch for the aluminum at the bottom of the sleeve rubbing the piston skirt & the extra width of a 0.030" over piston can hit the edges of the squish band. may need some clearancing. If your compression is over 120 it wont make much difference.