how large a bore with a sleeved block?

Back to my explanation, it all depends on how thick the cylinder walls are. One block may have core shift and can't be bored much more than .060 before hitting water and the next one could be bored .120. You have to sonic check the thickness to figure how far it can safely be bored. It also depends the OD. of the sleeve. Each machinist may have a different idea on how far on can go safely.. There is no specific answer.