The 1955 Chevy was the 1st of the Chevy Tri-Five series and the first Chevy to come with a V8 engine (265 cubic-inches) since 1918. It introduced many features that would become popular in cars from the 1950s. The 1955 Chevy included three basic models: the Bel Air, the Two-Ten, and the One-Fifty and 16 new body styles. Of course, '55 was also the first year for the Nomad.
The 1956 Chevy was still the same basic design and was a carry over model from the 1955 Chevy but had some major styling changes in the grille, trim and other accessories. Some of those changes included redesigned front and rear fenders, a full width grille, redesigned side trim, larger rectangular parking lights, and a hidden gas cap that was behind the left taillight.
The 1957 was the last of the Tri-5 Chevy series that included large tail fins, twin rocket hood design, more chrome, tri-color paint and a larger available 283 cubic-inch engine. Though based on the 1955 and 1956 Chevy, the 1957 had sharp but tasteful tail fins that a year later would dissolve into the low and curved rear fenders of the totally restyled 1958 Chevy.