Hey Pat, the sleeves I have are 3/32. I was starting to worry because the area between the bores is thin and I thought there was a chance it would be completely removed when cutting the block out for the sleeves. I did some measuring and there will be some material left between the sleeves, just like your pics of the big blocks. It looks like they won't get into the steam holes either. I noticed that you cut all the holes and then put the sleeves in. We thought that because the area left between the sleeves will be so thin, there might be some advantage in cutting one hole, installing the sleeve, and then cutting the next hole. You know, finishing one before starting on the next. Then again, because of the press fit, this might allow for some distortion of the block. If a sleeve is pressed in, the cylinder next to it might not be as true. Does that make sense? What are your thoughts on this. Cutting all the holes first, then installing all the sleeves would definately be faster. Thanks for your help. Oh yeah, The guy helping me is my next door neighbor. He's a retired machinist. He's in his 70's. I guess he got his start on model-A engines? He can handle the job but I'm trying to learn as much from him as possible and do most of the work myself with his guidance. He has sleeved a lot of engines, but never all 8 on a small block chevy, so we are both learning here. Thanks