What engine came in a 1955 Chevy Bel Air?
The 1955 Chevy Bel Air could be equipped with either Chevrolet’s new 265 cubic-inch small-block V8 or the traditional 235-cubic-inch inline-six.
In 1955, Chevrolet introduced its iconic small-block V8 and offered it alongside the familiar inline-six in Bel Air models. This pairing reflected a pivotal shift in American automobiling, giving buyers a choice between economical reliability and notable performance in one of GM’s most celebrated cars.
Engine options in the 1955 Bel Air
Two engine families were offered for the Bel Air in 1955. Here's a concise look at what powered these cars:
235 cubic inch inline-six
Chevrolet's traditional six, often called the Stovebolt Six, was available in Bel Air models and served as the standard or economical choice. It was known for reliability and straightforward maintenance.
- Displacement: 235.5 cu in (3.86 L)
- Configuration: Inline-six
- Approximate power: about 120–125 horsepower
- Common torque: around 200+ lb-ft
For buyers prioritizing fuel economy and smooth operation, the inline-six remained a solid option in the Bel Air lineup.
265 cubic inch small-block V8
Introducing Chevrolet's famed small-block family, the 265 cu in V8 was offered in the Bel Air in 1955 as a performance-oriented alternative to the inline-six. This engine would become the backbone of Chevy’s powertrains for decades.
- Displacement: 265 cu in (4.3 L)
- Configuration: 90-degree V8
- Power (two-barrel): about 162 horsepower
- Power (four-barrel): about 180 horsepower
The V8's lighter, compact design delivered more performance while still fitting in the same engine bay, marking a turning point for Chevrolet and American muscle-car history.
Summary
In 1955, the Chevy Bel Air offered two distinct engine paths: the established 235 cu in inline-six for those seeking simplicity and efficiency, and Chevrolet's new 265 cu in small-block V8 for those chasing performance. The introduction of the 265 small-block in 1955 is widely celebrated as a milestone that launched the modern era of Chevrolet engines.
