The 1955 Chrysler C-300 was named for its 300-horsepower rating.
Its 331-cubic-inch FirePower Hemi V8 produced the headline figure, making the C-300 one of America’s most powerful production cars when it arrived. Chrysler marketed it as “America’s Most Powerful Car,” pairing serious performance with a relatively luxurious New Yorker-based body.
The C-300 was not simply a trim package with a cosmetic badge. It received dual four-barrel carburetors, a performance camshaft, solid valve lifters, special exhaust equipment, and suspension changes. Those features helped it compete successfully in NASCAR while remaining available to private buyers.
The “300” name refers to horsepower, not engine displacement. Its engine displaced 331 cubic inches, a number that is easy to confuse with the model’s name. Chrysler built only 1,725 examples in 1955, making the car both historically important and scarce.