I just fuinished rebuilding a 4L80E and had to get the longest pin to get the rear band adjustment right.
The part number is 24202583. Years ago I was given a GM part number by transgo for a GM diff shim kit that works well for
adjusting the rear band clearence on a TH400. The shims fit on top of the piston and work well for adjusting band clearence.
I have used this method several times. I have forgot the part number, called transgo, and they do not seem to have the
shim kit number anymore as well. Does anyone have this GM shim kit number?
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