Gaskets are .045 crushed thickness butler branded. I used Butlers compression calculator, my machine shop mocked it up today and the deepest piston was .028 with the tallest being .025. I was going to have him mill the .025. I called Ross for the cc of the dish on the piston as these were custom ordered from butler.
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1969 GTO street strip project 11.1 forged 461, highport heads
1995 Trans-am 420 ci sb 14:1 compression 9"ford
9.89@132 1.34 60ft SOLD!
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