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Jim Brierley · 08-01-2018, 11:17 AM

tinkirk, with head gasket installed.

Hoogah, Racers in the old days would bore their blocks to .187" oversize, although most stopped at .125", which works well. I don't recommend going more than 4", which is .125" over.

To all, I wouldn't mill off any more than just enough to touch the area above the pistons. Stock heads aren't very thick, and you no longer gain much compression. Stock pistons aren't very thick either, so use caution there.

08-01-2018, 11:17 AM	#14
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,091	Re: Milling the head tinkirk, with head gasket installed. Hoogah, Racers in the old days would bore their blocks to .187" oversize, although most stopped at .125", which works well. I don't recommend going more than 4", which is .125" over. To all, I wouldn't mill off any more than just enough to touch the area above the pistons. Stock heads aren't very thick, and you no longer gain much compression. Stock pistons aren't very thick either, so use caution there.