Many of the "Pro" 727 Transbrake require the driver to push the button on the transbrake for the car to back up.....
some allow this to happen while the shifter is in neutral or reverse.....my Tranzact will back up in either neutral or reverse with the button pressed....il
His complaint is ....the trans seem to drag while backing up in reverse.....
Well then like many posts on Moparts we have to guess whether he has a pro transbrake or not. My CRT 727 is older and I pushing the transmission brake button to back up was required.
