Thats a good question Mike and brings up a sore subject. The shop that originally did the block work checked it and cleared it for a .040" overbore, I thought .040" was safe but they said they would make sure. However just short of completion I ended up hastily pulled the block out and sent it to another shop due to some "disagreements" and never got the actual numbers.

I had a couple of snags when I was first building this thing 3 years ago. Hindsight is 20/20.