cheap 4l60e????
Usually, about 75% or more of a trans rebuild is labor. For a high performance rebuild/mod, you're also paying for the shop's knowledge of what mods/components work best. With the info in books and the web you should be able to easily build a trans for your power levels.
I'm not a 4L60E expert, but I would guess you could easily buy all the parts you need for <$500.
Unless you need a rebuild I would run it till it pukes and then maybe upgrade a little. But my guess is it will last forever if you're not abusing it.


