Maybe it was the 361 in the late 50's?,which would fit a 383.They did come with a dual quad setup
The B series 383 joined the lineup in 1962. This workhorse engine was rated at 343 hp with two four-barrel carburetors, making it the most powerful B series 383 ever produced. (Jerry Gulino pointed out that a 345 hp 383 engine had been used in 1959, in the Super D-500 2x4s. The Ultimate Guide to V8 Engines says that the 383 went up to 350 hp in 1959).