Another 383 pistons thread

RustyRatRod did have a 383 with the KB domes, but I don't think he ever got a chance to run them...

About the only way you're going to get a true mechanical 10:1 with a 383 and 88cc chambers would be to have a little dome on them (if you actually want valve reliefs). Even if you zero deck a 383, the valve reliefs along with the big chambers won't get 10:1...even .020" out of the hole with .025" shim gaskets, you'd only get about 9.6.

The other side of this discussion is to accept less than 10:1...unless you have a very specific idea in mind, it's not needed. Check out IQ52 for low compression builds--to include 383s