CyberGray

Can the GM LS6 motor handle 600 HP with the addition of a supercharger without any modification to engine.

Quickshift_C5

Easily, with the proper tuning.

95wht6spd

I have seen as high as 800whp stock block.

neutron82

600 is a piece of cake as long as you have enough octane and the tune is spot on... a good set of valve springs and a timing chain are not bad ideas, maybe a set of rod bolts if you plan on revving past the stock limiter, but as far as the rotating assembly goes you don't have to mess with any of that

KnightDriveTV

600whp and below...good to go. A bad tune can destroy any motor but, I ran a bone stock LS6 at 580whp and drove it like I hated its life...never skipped a beat.

momo20

should be no issue i would add some rear head steam port or steam line's as well as a meth kit to keep your temp's in check