Check this out
https://www.hotrod.com/articles/new-...-low-end-loss/
Richard Holdener is one of the kings of how to make power with an LS - I asked a similar question of him for my 5.3 and he said "600 lift, 230ish duration" - which would get me around 400-425hp with a good tune. That cam should be a lot less aggressive in a 6.0 vs my 5.3. The article above, though, outlines a specific cam where he got close to 500hp at the crank. Granted, he's running no accessories, straight out the headers, but it should be a decent guide for you.