I find this very impressive, i'm sure it has already been posted.
It still retains the stock LS3 heads or they GMs new CNC LS3 head with the ASA camshaft? 226/236 .525/.525 110
Seems like if it was as easy as just a camshaft that mild we all would be doing it... Especially with stock manifolds?

http://media.gm.com/content/media/us...Nov/1101_crate

525 HP @ 6300 rpm
489 LB-FT @ 4400 rpm