The Chevrolet 409 is a V8 engine that was produced by Chevrolet from 1961 to 1965. Known for its power and performance, it was designed for high-performance vehicles, particularly in the muscle car era. The engine featured a 6.6-liter displacement and was capable of producing up to 425 horsepower, making it a popular choice among car enthusiasts. The 409 engine gained fame through its association with the Chevrolet Impala and other models, becoming a symbol of American automotive performance. It was also featured in popular culture, notably in the song "Little Deuce Coupe" by The Beach Boys, which helped cement its legendary status.