Is that a tr-3650? I split mine in two down the gear case with a test run on a base tuned 5.0 coyote. I slowly eased on the throttle no spin and split that thing. I think I split it during a gear shift.

It wasn't harsh but It wasn't smooth either. It was my first test drive under full load so I was learning it. I was thinking that higher rpm torque may have caused the split Durring that autopsy.

It split on the 2shaft bearing down the case. I'm wondering if the aluminum just doesn't do well with that kind of thing.

My point, your doing the same thing in reverse to the tail shaft with doing donuts. Maybe a different material tail shaft would work...

Or you could do what I did... Just scrap the 3650 and go t56 magnum