62cc J Head Chamber

OLFOOL said
I have a set of J heads with 68cc chambers, I need 62cc to reach the 10.4:1 compression I need. I already have a set of Cometic head gaskets .060" which I will use. Has anyone milled them that far?

Talk to your machine shop. They will do the milling and know how far they need to go to get there. (with or without your head gasket you want to use)