Fourth generation 1955-1956
1955
In 1955, Chrysler did away with the out of fashion high roofline designs of K.T. Keller and came out with a new sedan that borrowed styling cues from Virgil Exner's custom 1952 Imperial Parade Phaeton. The hemi engine produces 250 hp (190 kW) this year. The result would become an ongoing trend for increasing engine output throughout the next two decades with Chrysler and its rival competitors. The Powerflite transmission was controlled by a lever on the instrument panel.
The series was called New Yorker DeLuxe with the base New Yorker dropped. The club coupe was dropped being replaced by the Newport two-door hardtop. A new higher priced St.Regis two-door hardtop filled the spot of the former Newport. The sedan, convertible and Town & Country wagon were still offered.
1956
In 1956, Chrysler christened this model year "PowerStyle" and it was one of the design works of Virgil Exner. The New Yorker gained a new mesh grille, leather seats, pushbutton PowerFlite selector, and a V8 with 280 hp (210 kW).
The St. Regis two-door hardtop gave a unique three-tone paint job for a higher price and the Town and Country Wagon model was Chrysler's most expensive vehicle of 1956 at US$4,523. This was the first year for the New Yorker 4-door pillarless hardtop. Only 921 convertibles were made.
Source: Wikipedia
Chrysler New Yorker history:
Chrysler New Yorker (1st gen) 1940-1942
Chrysler New Yorker (2nd gen) 1946-1948
Chrysler New Yorker (3rd gen) 1949-1954
Chrysler New Yorker (4th gen) 1955-1956
Chrysler New Yorker (5th gen) 1957-1959
Chrysler New Yorker (6th gen) 1960-1964
Chrysler New Yorker (7th gen) 1965-1968
Chrysler New Yorker (8th gen) 1969-1973
Chrysler New Yorker (9th gen) 1974-1978
Chrysler New Yorker (10th gen) 1979-1981
Chrysler New Yorker (12th gen) 1983-1988
Chrysler New Yorker (13th gen) 1988-1993
Chrysler New Yorker (14th gen) 1994-1996