Sonic checking my 71 360 block

So I'm currently building a 360 stroker motor and so far I've bushed the lifter bores, deburred the the block. Now I'm working on sonic checking the cylinders. So far I've checked 1357 in the middle of the bore a d I'm getting anywhere from .200 to .230. I checked the top of the deck on 1 and 3 and it was around .250-.260. This is an already 4.030 bore. I will probably need to take this to .040 over. This will be a 600ish HP motor. So far so good on the numbers? What is the No good number?