Sitting beneath that, and connected via a massive drop chain is a Turbo-HydraMatic 425 three-speed automatic. This would be the only drivetrain available in this model.

Except, then you look into the back seat, and see a 500 cubic-inch V8 engine out of an early '70s Cadillac Eldorado, along with a Turbo Hydramatic 425 three-speed automatic from that same car.

It was paired with a Turbo-Hydramatic 425 transmission. The mill in this Toronado is likely the original unit, but its condition is a little unclear.