They problem ended up being the Pinion Angle.
It was 3 degrees up,under torque lifted pinion angle even higher,pushing the trans tail shaft up,breaking the bell housing.
Put 6 degree angle shim in leaf spring,dropping the pinion angle down 3 degrees. Now under torque,lifts pinion up to level,not breaking the case,and giving me more forward bite. Coming out of the corners quicker. Thanks for all the help. #13