Engines of this type were popular before 1930s in large-side cars, specially between 1910s and 1920s. Most manufacturers started building straight-six engines when cars grew too large for the inline-four engine. One of the longest-in-production inline-six automotive engines in the United States was the OHV Chevrolet Straight-6 engine, which replaced Chevy's previous inline-four engine in 1929, and remained in continuous use in the US for powering Chevy vehicles until 1990, in displacements ranging from . General Motors divisions each built their own proprietary straight-six; the Oldsmobile Straight 6 and the Pontiac Straight 6 were flatheads, while the Buick Straight 6 was OHV.