6L80E Inspection

[Craig@Bowler]

Signs of burned (brown) fluid, cooked gaskets, and metal shavings are usually good indicators that you can add 100,000 to whatever mileage number was advertised. .

I agree with this. If you see any signs of "dirty" fluid be careful, this typically is friction material that has worn off after a period of time. Also, once you clean it up really well on the outside check closely for any cracks from mishandling or abuse. We get cores here periodically that appear to be fine until you start cleaning them up. Maybe one way to go would be to try and find a transmission shop near you that has a transmission dyno that they would be willing to run it on. This would at least give you some idea of how it would perform in the car.