I am with Al here, my guess would be 550-600. I know that from the people I have seen fail most of the time they have arod bolt fail or possibly the high revs on the ls1. I know the stock ls6 is set to spin to 6500 so there is probably a difference. I however plan to put a new bottom end together so that when I spin to 7200 I will not have a worry in the world.

Al, I got some products from Bowling Green last week, got to be happy with their work that is for sure.