Mark Benson
1975DodgeDartSwinger318
I just rebuilt a 78' non-lockup 727. The problem is when i put it in reverse it will move backwards then all of a sudden in will stop almost like it goes into park and i can not even push it forward or backwards.It will start in park and neutral but in neutral it will take off forward?I ruled out the gearshift linkages by removing the arm to the braket on the tranny(valvebody) and had someone get in and start the car while i was under it and put it in reverse, same thing, reverse would lockup. Also it would still move forward when in neutral. Just to note it had reverse before i rebuilt it. All other drive ranges work. I was thinking maybe something on the valvebody got bent?