I have a Powerglide-equipped 235, and a GMC engine/Hydramatic trans assembly, but they're both still bolted together. I remember that the Hydramatic torus is a 2 piece assembly held together by a couple of dozen studs and nuts just inboard of the starter ring gear, with the front part bolted directly to the crankshaft flange.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!