Originally Posted by Phalcon51

As long as it didn't crack the housing I can't imagine you did any serious damage to the trans. I would think it could handle a shock like that as they're not exactly delicate. It seems that, without hydraulic pressure, none of the clutches or bands would be activated and perhaps that's why the output shaft is not turning with the torque converter. However, maybe someone with more experience can tell you how to bench test it to make sure.

Gary