I think you have it backwards...
Upgrade your Turbo/Intercooler first then do the cam. The stock cam will run 10s but of course you wanna upgrade the springs as the stock ones suck
My LS1 doesnt really feel that fast from say 3rd gear on. Put a Turbo on the GN and watch how crazy it pulls in 3rd gear.
In my TTA 3rd is its strongest gear. It just keeps pulling and pulling..
------------------
Mike Schoenfeld 