Biggest bore for a QL9
And the answer to your question is how far do you want to go? they can be safely bored to .030 over, and if your lucky and a little crazy and you want to push it you may be able to go .060 over. No matter what, sonic test to see how far you can go to avoid sleeving it.
4.8 LR4 = 294ci (3.779 bore x 3.270 stroke)
5.3 LM7 = 325ci (3.779 bore x 3.622 stroke)
5.7 LS1 = 346ci (3.900 bore x 3.622 stroke)
6.0 LQ4/LQ9 = 364ci (4.000 bore x 3.622 stroke)
BTW 5.3 and 4.8 are the same blocks, the 5.3 is just a 4.8 with the 6.0 crank(stroked 4.8)


