Don't know if trans type has been mentioned. But, here's what I always do. Standard trans, drop it on the floor, leave the bell housing on the engine, and pull them together out the top.
Automatic, leave it on the engine. It's a pain to unbolt/bolt trans to block, besides the stabbing that has to be done, to get it into place. With both engine/trans, I clear off all the front acc, and pull the radiator, for clearance. Even like that, it takes a pretty good angle to pull it out of the 'hole'. Once over the core support, depending on what type sling your using, might take a third hand, to pick up the trans end, up and over.