One way to find out
I wouldn't do it above 10 to 20 MPH roll at light part throttle or better yet let all the way off before doing it
I use to drag race a 415 HP M.W. 1963 Plymouth Belvedere 2 door sedan, I had A1 freshen the tranny that had a T.A. manual shift valve body in it and they changed it out to a low band apply , NO GOOD
I use to shift it into neutral after going through the 1/4 mile with the stock push button shifter, it would still try to apply low gear band, NOT good
I bought another T/A valve body and put it in the car after that race