sorry Greg i'm running around like a madman trying to get ready for a trip to CA and wasn't paying attention when i posted the numbers. the housing bore is listed as 2.9425-2.9430. i don't think you usually move the crank up too much just bumping the mains with a hone but i've personally never performed this operation or payed attention. obviously it depends on what it takes to get it straight/round and to size. on the piston to head i'd be interested to see what people have to say. of course there are a number of factors. bore size, piston clearance, RPM, rod type etc. i'm wrestling with this issue on a new build because the pistons are .005 taller than i wanted. i'm at zero deck with a 4.5 crank, 7.1 olivers and fresh 4.44 bore. this is an aluminum block so i'm wondering if it will grow some and open this clearance up a little. at this point all my piston to head is going to be in the gasket so i may be limited on what i can do.
