well, i sent out the block to get cleaned and resurfaced, but the machinist said that it had to be bored. i don't know how much it needed to bored out, due to the imperfections they've discovered- i wasn't briefed on that, but surely i will tomorrow. my question pertains to the stock diameter of the ls cylinder walls- which i believe to be 81mm and its overbore. how many millimeters can my block be bored out to without having it being resleeved? i know that the process of resleeving can get quite expensive, so im curious to know my block's limitations. any help is much appreciated.

 

Most reliable machine shops should have this information for you.

 

or the factory service manual -which i dont have on me right now.

i believe its 81.5mm