Its probably best to give some more details on the trans. All we’ve got is that it is a 727 and it has dumped the fluid out. Im assuming it came out from the front. “All dumped out” to me is more than a seal, only time I had a 727 dump a large amount from the front is after my first attempt at a full rebuild and the bushing spun loose from the pump. I didn’t stake it correctly. (converter was installed correctly etc) Out came the trans, the pump housing and then I correctly staked a new bushing in along with another new seal. Again, I’m assuming based on the very little info you’ve provided.
