Hi guys (& gals?)- Been "out of the loop" for awhile, but now I'm crawling back for guidance:
I've just partially completed a 4D55 block rebuild using ITM .020" pistons. Installed #2 and 3 piston/rod assemblies, and it looks like crown protrusion is running about .065". YIKES! Is that TOO MUCH? Can't seem to find the correct specs anywhere.