What is a 1957 Chevrolet 150?

the 150, for the economy-minded consumer, The Chevrolet One-Fifty, or 150 was the economy/fleet model of the Chevrolet car from 1953 to 1957. It took its name by shortening the production series number (1500) by one digit in order to capitalize on the numerical auto name trend of the 1950s. The numerical designation "150" was also sporadically used in company literature. It replaced the Styleline Special model available in previous years. This model was dropped following the 1957 model year and replaced by the Delray. engine was 235 cu.in "Blue Flame" I6 rated at 140 hp.but you could order a v8..

ClassicM got most of it right, the Delray was just a deluxe model 210, first produced in 53, the 150 was the no frills base model, where as the Belair was also introudced in 53 and was recognisable by its trim and the lack of the window post, thus the term hard top. however the Biscayne was introduced in 58, and as far as a 210 Belair, no such animal, it was eaither a 150 a 210, 210 Delray, or Belair, sorry but those are your only choices,