The Coronet is an automobile that was marketed by Dodge as a full-size car in the 1950s, initially the division's highest trim line but, starting in 1955, the lowest trim line. From the 1965 to 1975 model years the name was on intermediate-sized models. A coronet is a small crown consisting of ornaments fixed on a metal ring.
Third generation 1955-1956
The 1955 Coronet dropped to the lower end of the Dodge vehicle lineup, with the Wayfarer and Meadowbrook names no longer used and the Custom Royal added above the Royal, Lancer, and La Femme. Bodies were restyled with help from newly hired Virgil Exner to be lower, wider, and longer than the lumpy prewar style, which in turn generated a healthy boost in sales over 1954. Power came from either a 230 cu in (3.8 L) Chrysler Flathead engine straight-6, now producing 123 hp (92 kW) Two V8 engines were offered: 270 cu in (4.4 L) Polyspheric (poly or semi-hemi) heads producing 175 hp (130 kW) and a 315 cu in (5.2 L) (the "Hemi")
Power windows were new. Wheelbase was 120 inches. They were 212.1 inches long.
A number of trim lines were available:
2- or 4-door station wagon — The Coronet wagon used the Suburban name and had the V8 or six
hardtop coupé — The V8 Coronet Lancer
2- or 4-door sedan — V8 or Six
2-door sedan — V8 or Six
4-door, eight-passenger limousine
1956 (:See also Plymouth Fury) was the last year of this body style before the change in 1957, the only differences offered in 1956 from the previous year were trim packages and the new Dodge D-500. The D-500 was the first Dodge factory high performance made in honor of the (D-500-1) "Super Stock" model with the only external clues being discreet crossed checkered flags and "500" lettering on its hood and lower rear deck it was also available for order from the dealer on Coronet models, including station wagons and two-door sedans. The standard D-500 trim included a 315 cu in (5.2 L) V8 with hemispherical heads (unlike other Dodge V8s which used Polyspheric heads), a unique camshaft, valve lifters, pushrods, carburetor, ignition, and pistons. With a compression ratio of 9.25:1, four-barrel Carter WCFB carburetor, and dual-point distribution, peak horsepower was 260 bhp (190 kW) while torque was a solid 330 lb⋅ft (450 N⋅m). The D-500 also received an upgraded suspension with stiff front coil springs; heavy duty Oriflow shock absorbers, with the same valving specified for Dodge police cars, were mounted in the springs. Similar units were used in the rear. Overall height of the D-500 was 1.5 inches (38 mm) lower than its standard Dodge counterpart. The D-500 came standard with 15x5.5 inch wheels with 7.60x15 inch tubeless tires. New for safety were safety door locks.
The D-500-1 (the first 500 made required by NASCAR, was intended for NASCAR competition. The D-500-1 had an even stiffer suspension than the D-500. Under the hood, the engine received larger valves (about 18% larger), a full-race camshaft, and a double log intake manifold that used two four-barrel Carter WCFB carburetors and a shaved deck for 8.25:1 compression. This all added up to 285 bhp (213 kW). It was the fastest car that year from the factory.
Dodge Coronet history:
Dodge Coronet (1st gen) 1949-1952
Dodge Coronet (2nd gen) 1953-1954
Dodge Coronet (3rd gen) 1955-1956
Dodge Coronet (4th gen) 1957-1959
Dodge Coronet (5th gen) 1965-1970
Dodge Coronet (6th gen) 1971-1974
Dodge Coronet (7th gen) 1975-1976
Source: Wikipedia