I was looking at getting a new block from GM, i cant access the number right now, buts its the basic 350, 2 piece seal, 4 bolt main block for like $ 799 from summit racing. I looked at the GM performance catalog and this block states that the max bore is 30 over. i called 2 local gm places and asked if the MAX BORE is 30 over and they could not answer the question.
Does anyone have experieince with this block and what is the true MAX BORE this block can take ??