ok, FYRHWK1 you're right, they didn't make aluminum LT1's and i'm sry for openning my mouth before i completely knew about it. but i still stand by aluminum LS1's, you can even buy them here:
http://www.cmotorsports.com/engine/l...teengines.html but i never said anything about redoing the internals oh any engine, so i'm kinda lost on that. but i would still reccommend iron blocks over aluminum b/c the bottom line is they're stronger.