Looking for anyone's past experience upgrading a 95 Silverado 4x4 5.7 liter with a 4L60E up to a 4L80E trans. It appears the tail shaft housing is longer and I suspect I will need to relocate the crossbeam. I haven't measured it yet. Just eyeballed the bell housing bolt pattern. I have heard the TCM will carryover. This truck is used off road a lot and for now it is still on stock wheels and tires. It will get lifted at some point so I see no reason throwing money after the stock 4L60E. The only mod so far is Flow Master Super 10 catbacks. Does anyone know of a compatibility chart? I would like to just drive over to pull apart and find a 2500-4x4 and take the trans out of it.