[Z06] intake mani and tb
But if you are stock displacement you would not see any gains that would be worth your time and money. If you have a cam, or heads and cam then you may see some gain but still probably not worth your time and money, unless you get the parts really cheap and you do the swap at same time of head cam swap.
I'm sure there will be others to disagree, but let's see some #'s to prove it.
But I've seen some "Hot Rod" performance swap articles where the LS6 manifold actually made a few more HP than the LS2 even though the TB opening is smaller. Maybe that's one of the reasons the factory LS6 was up 5 HP on the LS2 even though the LS2 has more cubes.






