The Pierce-Arrow line was completely overhauled in 1920. The basic line of three chassis, the 38 horsepower, the 48 hp, and the huge 66 hp, were replaced with a single product. First introduced in 1920 as the Series 32, minor changes in late 1921 transformed the car into the Series 33, with the ultimate development of Pierce's massive 414 cubic-inch inline 6-cylinder T-head engine with 4 valves per cylinder. The Series 33 cars sold for $6,500 to $8,500 - significantly higher than their typical competition - and offered unmatched quality and detail. Sales slowed as their design aged and total production of the series from 1921 through early 1926 was only 6,000 units.Also photographed at :