See above. Shift into second before getting out of the burn out. A bolt in sprag with extra rollers and a valve body with low band apply are good upgrades.
I recently had a sprag let go while lightly accelerating through a light. It locked the back wheels up very violently. It destroyed the sprag but luckily the case was still intact. Numbers matching 340 car so I was very concerned the case was going to be toast.
Hope that driver didnt loose any toes!
Yeah a 904 can do this too. It might be less common since the drum is much smaller.
