4/27: It’s 427 day—and in 1963, Chevrolet created two engines to rain down Turbo-Fire on the competition
Chevrolet designed two 427-cid big-blocks to take on Dodge, Ford, Mercury, Plymouth, and Pontiac. The NASCAR engine got a single four-barrel, while the NHRA engine had two four-bar
https://www.nhra.com/news/2025/427-it-s-427-day-and-1963-chevrolet-created-two-engines-rain-down-turbo-fire-competition