Weird 727 problem

Guitar Jones said

This is confusing, first the OP says it hasn't been started in 6 months, how can you possibly tell the trans is the problem if you haven't started it? Just starting it and putting in the gears isn't going to grenade anything, just don't try to force it if it doesn't want to move.

If you are just trying to push it or turn the driveshaft then maybe there isn't anything wrong with it or maybe the rear brakes (still got drums?) are just adjusted too tight.

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Well I first noted the problem when we pushed the car off the rack, we rolled it forwards and then tried to roll it back into an open spot. it wouldnt roll backwards, i had to jack it up and remove the drive shaft for it to roll backwards. The driveshaft will not spin backwards. I was in a little accident with the car reason why is hasnt run, I'm wondering now if something broke inside the transmission. or I locked 2 gears together by removing the front adjuster and installing it without torquing, so I'm gonna torque it in a few hours when I get home, and try to start in neutral and see what happens.

-Chris