sbc deck clearance
I ran into the same problem with my BBC. Mine were .017-.021 on both sides. the bummer was I had the short block put together. I ended up disassembling the block and having the machine shop deck it to square it up. Ended up at .005 in the hole. Since I am building a 496 cid I also had the the three center mains drilled and installed Program 4 bolt main caps and align bored.