why is it so bad?
The are some issues with the 4l60e. We at Finish Line Transmissions(FLT) address them with our hp units. Go to our web page and view the GM HIGH TECH article and it shows you some of the issues and corrections. We are located in Wood Dale Illinois not to far from you. www.finishlinetrans.com. We build these units every day and currently are working on the online store for you guy's that like to do it yourself. Thank you for your time, Vince.
I hear FLT builds a great 4l60e. ALOT of guys are running his transmissions around here and are satisfied. I run a Rock-On myself (4l60e) and it's been great so far. I'm not making any insane amount of power numbers for sure, but my stocker took a dump at only 25000 so I must be doing something wrong 
If your going to try a 4L60E then by all means have a reputable builder like FLT or ROCK ON build it.
I went through 2 60Es, one supposedly "built" locally and it lasted 26k.
I now have a Rossler TH400 but I beat the crap outta transmissions, manually upshifting and downshifting, manually dropping gears and punching it from a roll........all kinds of nasty things.
so the RMVB TH400 worked out much better for me. I can do pretty much whatever I want (short of abusing it) and it just takes it and laughs at me.
I went through 2 60Es, one supposedly "built" locally and it lasted 26k.
I now have a Rossler TH400 but I beat the crap outta transmissions, manually upshifting and downshifting, manually dropping gears and punching it from a roll........all kinds of nasty things.
so the RMVB TH400 worked out much better for me. I can do pretty much whatever I want (short of abusing it) and it just takes it and laughs at me. 
