75 block. It's already been rebuilt good, it's just that some water got into 3 of the pistons and surface rusted the walls a bit. Needs more than honing. I honed them but I'm near .032 now with 30 over pistons and theres some roughness left from the rust. So, I felt like I should go ahead and buy a set of 40 over pistons and have it bored again.
Now about clearances..should'nt they be already good if I put everything back as it was?