I have an LS3 with the Hot Cam....GM says 480hp. It is an estremely tractable engine....pulls from idle in high gear (but probably doesnt like it). Idles great with A/C on or off. With any injected engine/factory program map with the intake tract modified, I suggest a good remap.....it made significant difference in mine. I am anxious to get some race gas in it to see what affect that has.

mike in tucson