The DeSoto Firedome was a full-size automobile produced between 1952 and 1959 by DeSoto automobiles, a division of the Chrysler Corporation. Introduced as DeSoto's premium line of vehicles in 1953 and 1954, the Firedome also occupied the least expensive position in the model lineup during 1955 and 1956 model years before it was reclassified as a mid-range vehicle offered by DeSoto between 1957 and 1959.
Entry Level series (2nd gen), 1955-1956
In 1955, Chrysler dropped its 6-cylinder DeSoto Powermaster series and added the topline Fireflite series, pushing the Firedome down to entry level status. Still, the Firedome was not a cheap offering, retaining its V8 engine, but increasing the 276 c.i. displacement to 291 c.i. with a larger bore,a power boost to 185 horsepower, and coming with a host of features and interior upgrades that were lacking in the Powermaster series. While Powerflite 2-speed automatics were advertised as optional transmission equipment on the Firedome, officially the car was also offered with a 3-speed manual as standard equipment, although few were produced. In 1956,the Firedome V-8 got still another boost in horsepower, to 230 H.P., an increase of 45 horsepower over the previous year.
Source: Wikipedia