The Chevrolet Special Deluxe Series AH Fleetline is an automobile which was produced by US automaker Chevrolet from 1941 to 1952. From 1946 to 1948 it was a sub-series of the Chevrolet Fleetmaster rather than a series of the Special Deluxe and from 1949 to 1951 it was a sub-series of both the Chevrolet Special and the Chevrolet Deluxe. In its final year it was offered only as a sub-series of the latter. The Fleetline was introduced late in the 1941 model year as a four-door sedan only. In 1942, a fastback two-door "Aerosedan" was also offered while the sedan was renamed "Sport Master". In 1947, the Fleetline made up 71.26% of Chevrolet's sales. For the years' 1949 through 1952 models, the fastback was the only one offered, and Chevrolet dropped the Fleetline for 1953. Production was indefinitely delayed in 1942 due to World War II, after 110,000 had been made, though several thousand Chevrolet coupes and sedans were produced during the war years for military staff use. In 1945, production for civilians resumed. The original series was produced through 1948. A redesigned Fleetline with reduced body contour and integrated rear fenders was offered for the 1949 through 1952 model years. It was referred to as a "fastback" because of its distinct sloping roof which extends through to the trunk lid. The Fleetline during the 1949 to 1950 years also has a lower look than a sedan, with the windshield being one inch shorter in height than a standard contemporary sedan. The 1949 to 1951 models were made in both four-door and two-door models, with only the lower portion of the doors being interchangeable with a sedan door. The Fleetline series is currently highly collectable. Many are made into street rods, with the common Chevrolet 350 small block V8 and the 350 or 400 turbo transmission being used. Specifications In the 1941 and 1942 model years, the 216 cid inline-six "Blue Flame" engine was the only one offered. It produced 90 horsepower at 3,300 rpm, and in 1950 higher compression bumped it up to 92 horsepower. Also in 1950, a 235.5 cid single-barrel carb six-cylinder engine with was added. A Fleetline of this vintage could easily exceed 80 miles per hour without overdrive. In very early models, the transmission was a manual synchromesh three-speed, with vacuum-assisted shift, in which the "three-on-the-tree" shifter was able to be moved between gears by