Yep, that's a Controlled Coupling Hydra-Matic. Those transmissions came out in 1956, with a major upgrade in 59. I've got one behind a 390 Cadillac engine sitting in a partially finished motorhome Dad started building before he passed away. That project should probably be scrapped, but I just can't bring myself to destroy all his hard work. It's a 61 Cadillac hearse chassis, stretched out and grafted to a 28 foot Spartan aluminum mobile home.
Jerry
