I have a 1999 LS1 WS-6 Firebird. I currently run 4.11's with the 6-speed, i have hooker long tubes, exhaust cut-out, dynomax mufflers, ported/polished heads, 1.7 roller-rockers, and was wondering which cam would be best for me

 

I give my vote for the hammer cam (222,222-.566,.566 112lsa) That is the one I have and it has worked great with my automatic. With a M6 you may be able to go with a bigger cam like the thunder 224 or bigger. Depends on what you like too. Whether you are looking for a big gain or little gain and great drivability.

 

If you don't mind having some tuning the F1 cam is the shiznit! .591/.569 230/226 112 LSA

 

Here is some data on known setups
http://ls1info.com/camstats/showdata.php

there is a place for you to install your
cam setup if its not shown.