Exactly, I was looking at a 40L80E. For the GM 383, are you looking at the HT383E? That's not a bad option with a slightly beefed up 4L60E and with a rebuilt trans may be OK as long as you aren't going hog wild with it. My trans was just rebuilt a month ago so it might have a fighting chance... Hmmm, you've got me thinking now.
Yes that's the motor. 3 yr warranty so gm backs it up. Also if I really really wanted to I would put a 4l80e and all the extra crap, but for me personally the 4l60e been good. I do have a heavy foot but it's for going on ramps and stoplights lol. Other then that I rarely tow or go offroad. (2wd) so it's not a must. The engine however I like the power output and mild changes like a tune. I'm not drag racing this baby. Just want something beefier and reliable. Oh and price if the motor kills it though. I dont mind throwing money at the suburban but 6g is a hell of a lot. This is my forever vehicle though and part of my family so money not the issue it's just I got Bill's lol.