i was wondering what kinda gains i can expect by doing this swap?i found the complete set (heads/cam)for $1100...is this a good price for that package?also I have a 1999 auto z...would i need to change out anything else to make this swap? i.e gears,stall, etc? i know im gonna need the ls6 intake manifold right?

 

are the heads ported? if not that seems high.

 

dont think so, they are brand new along with everything else

 

You can spend a little more and have a bigger cam and some ported LS6 heads is what you really want. As a general rule stall before cam on an auto. With such mods a good tune would also be a good idea.