I have come to learn that transmissions with a trans go shift kit boost pressure to 350 to 400 in reverse and can lead to pump/converter failure. I have no way of knowing if this trans had a shift kit installed or not. Not by looking at it anyway.
I have a TransGo TF-2 in the 727 of my street car. Lost reverse last fall backing down the drive way, fresh trans with less than 800 miles on it. Made a bang like a stuck brake shoe releasing?
I have yet to even look at it
![laugh2 laugh2](/ubbthreads/images/graemlins/custom/laugh2.gif)
Being as I do have a forward gear I'm thinking broken band, accumulator or the strut rod
![shruggy shruggy](/ubbthreads/images/graemlins/custom/shruggy.gif)
Never knew about the high pressures in reverse, good to know.
Have to agree with those who have suggested the pump.
Good luck
![thumbs thumbs](/ubbthreads/images/graemlins/custom/thumbs.gif)