The standard V8 offered in the 1955 Chevrolet Bel Air had a displacement of 265 cubic inches. Chevrolet called this overhead-valve engine the Turbo-Fire V8, and it marked the beginning of the small-block Chevrolet engine family.
The 265-cubic-inch V8 was new for the 1955 model year and produced 162 horsepower in its base two-barrel-carburetor form. Buyers could choose stronger versions, including the 180-horsepower Power Pack and a later 195-horsepower Super Power Pack. The Bel Air also remained available with Chevrolet’s 235-cubic-inch inline-six, so the 265 was the standard V8—not the standard engine of every Bel Air.
The 265 is often confused with later Chevrolet small-block displacements such as 283, 327, and 350 cubic inches. The 283 arrived as an available V8 in 1957, while the 327 and 350 became important later. Chevrolet’s compact small-block architecture proved remarkably durable and continued in evolving forms for decades, making the 1955 Bel Air’s 265 an important milestone in American performance-car history.