The 5.3's in GM's Gen IV arsenal:
LY5 - Iron block, AFM
LMG - Iron block, AFM, flex fuel
LMF - Iron block, flex fuel
LH6 - Aluminum block, AFM
LC9 - Aluminum block, AFM, flex fuel
LH9 - Aluminum block
Additionally, starting in 2010, they have VVT.
Any of these could potentially swap into a new Camaro and be relatively trouble free. Most will opt to remove the AFM and VVT if equipped. Of course, Camaro intake and accessories would need to be used.
if you're dropping into a LT1 4th gen then you'll need a LS1 K-member, but barring that then it should line up just fine. You'll also need to swap out your oil pan to a f-body pan unless you like the thought of running over squirrels with your oil pan.
__________________ 1994 Firebird Formula:
RUNNING AND FULLY FUNCTIONAL Variable Valve Timing LY6 engine out of a 2007 Chevy Silverado 3500HD,L92 heads and full bolt-ons.. Shooting for 400rwhp on 9.6:1 compression. Build thread at http://www.ls1tech.com/forums/conver...d-formula.html