The fuel-injected 283, which could be had as a (very expensive) option in the 1957 Chevrolet, definitely ranks pretty high on the list of Coolest Small-Block Chevy Engines, what with its then-awesome one-horse-per-cube power output. Here's a science-class-style GM infomercial, complete with gargly 16mm sound and helpful diagrams, that 'splains just how the Ramjet FI system does its thing. It's like having a ghost engineer controlling the fuel-air mix!

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SEMA Showstopper: '57 Chevy Sports Eight-Pack of Turbos [internal]