Rebuilt 727 no reverse took off pan help

Hey mark
If the trans tried to lock up on the 1-2 shift , the low rev. Band stuck on, that's what caused the bind.
Rear band will be wiped out and possibly the rear band drum also.
Best bet at this time is to just pull it disassemble and assess damage.
Hope not to bad, good luck.
Lon
Really?! Damn after it locked up I pulled over and I put it back in first and putted first down the street looking for a turnaround and when I went to turn around I had to make 3 point turn, reverse wouldn't work. Then put it in first and putted it about 500ft back to the house. I sat in the driveway going through the gears and it acted like what it was doing before no engagement to reverse but seemed to go into gear for drive so not sure but that would be awesome if it wasn't destroyed lol. Tranny was 1000 bucks...I'm going to buy a crt valve body cause I have been eyeballing one for awhile but I will report back soon thank u again for the help