Originally Posted by 95geo
drive it until the trans blows... then go big and you wont have to do it again.
Agreed. I've known a lot of people who've killed 4L60Es left and right with stock to mildly modded rigs, but then I've known people who put them through stupid amounts of abuse(too much weight, too much power, too much throttle, 170k miles) without so much as a hiccup. They're cheap, if you're running something fairly stock then give one a try and upgrade if the need arises.