340 build

1930 said
I called federal mogul today and they told me that I could easily/safely remove 100.000 from the top of the piston

You mean 100 thousand aka .100"
Like i said before, while you're doing you measurements keep quench in mind.
You can check the bore diameter on the head gasket you took of for reference.
With a .060 over bore 340 (4.100) i think you need to stay with a 4.180 bore gasket. i don't think a 4.04 bore gasket is a good idea. WHAT SAY YOU ALL...............

Now onto the valve reliefs. that tells you how much to subtract from a .018 pop up flat top right? You need more math to so see how many cc a flat top piston would be .018 out of the hole........or .020 out of the hole for you tallest piston......Make sence?
I will try and dig it up and lay it out for you.