20+ years of "Building 904/727 for drag racing use"

Probably the low reverse servo flipped in the bore. If it’s the piston, then yes can be fixed in the car as long as the band is still good.
Do you have 3rd gear ok ?
Yes I do, the owner continued to drive it to the hills, being careful never to park anywhere needing reverse, if he did he parked up hill so it could roll backwards.
Lower reverse servo flipped, :thumbsup:
Thank you so much Duane, I will do some searching and learn what I need to do, you gave me the information I needed to continue forward to repair this reverse problem.