727 no reverse, forward in neutral after rebuild

dumb question- assuming this is bellville spring/stuck forward clutches, is it ok to drive this thing? Probably 10 miles +/- to friends shop with lift.

If that’s your only way there, gotta do what you gotta do. I wouldn’t recommend it because I don’t wanna see any more metal go through the trans than already has with the broken spring (which I believe that is your issue). But think of it this way, if that bellville spring broke after you first put the car in drive before a trip, you had no clue there was an issue with it for the duration of the trip until you tried to back up. But after you get it to the shop by whichever means, please update with what is found.