This is an old one that probably everyone knows, but it's all I have.

To make it easier to install a transmission onto either the block or a bellhousing, take two long bolts (about 6 inches long) of the correct thread size to screw into a couple of the bolt holes in the engine or bellhousing. Cut the heads off and round the cut off portion a little to facilitate getting the transmission started onto them.

Screw the long bolts into the block or bellhousing so the rounded ends are sticking out (put one bolt on either side of the engine), then start the transmission onto the bolts and use them as "ramps" to allow you to slide the transmission into place. Obviously, you want to use the same holes on the block that you use on the transmission so it slides correctly into place.

I have used this with both automatic transmissions and stick transmissions. It makes it a whole lot easier to get both types installed, especially stick transmissions where you are trying to get the input shaft through a throwout bearing, through a clutch plate, and into the pilot bearing. Saves a lot of lifting and cussing. I keep a few different thread sizes in my tool box just for this purpose.

I figured there might be one person in the civilized world who didn't know about this trick.

Don