10/28/2026
Chevrolet sold the new V8 without one part.
The buyer could pay to add it.
It had to bolt on somewhere else.
Both left Chevrolet as 150s, a name the Delray took over for 1958.
A 1955 takes its fresh air in through the cowl, under the windshield.
For 1957, Chevrolet sealed that opening and put the air intakes behind the headlights.
The part it shipped without was the oil filter. The 1955 block had no provision for one.
The optional filter was a canister mounted on the intake manifold, and the oil heading for the bearings never passed through it.
A new block casting for 1956 put the filter in the main oil path, and the 265 grew to 283 cubic inches.
Neither car runs its original engine: 383 cubic inches in the white car, a modern V8 in the black one.
The name held for three years. What it covered did not.
The oil-filter change is easy to overlook, but it marked a meaningful improvement in how Chevrolet's small-block was designed. The 1955 arrangement was an add-on, while the revised block brought the filter into the engine's main oil circuit.
The 265-to-283 change came during that same short stretch of development. Both of these 150s have moved well beyond their original drivetrains, but the details that separate the 1955 from the 1957 are still visible in the way each car was designed.