The Ford Thunderbird began life in February 1953 in direct response to Chevrolet's new sports car, the Corvette, which was publicly unveiled in prototype form just a month before. Under rapid development, the Thunderbird went from idea to prototype in about a year, being unveiled to the public at the Detroit Auto Show on February 20, 1954. Like the Corvette, the Thunderbird had a two-seat coupe/convertible layout. Production of the Thunderbird began later on in 1954 on September 9 with the car beginning sales as a 1955 model on October 22, 1954. Though sharing some design characteristics with other Fords of the time, such as single, circular headlamps and tail lamps and modest tailfins, the Thunderbird was sleeker and more athletic in shape, and had features like a faux hood scoop and a 150 mph (240 km/h) speedometer hinting a higher performance nature that other Fords didn't possess. Mechanically though, the Thunderbird could trace its roots to other mainstream Fords. The Thunderbird's 102.0 inches (2,591 mm) wheelbase frame was mostly a shortened version of that used in other Fords while the car's standard 292 cu in (4.8 L) Y-block V8 came from Ford's Mercury division.[4]
Though inspired by, and positioned directly against, the Corvette, Ford billed the Thunderbird as a personal luxury car, putting a greater emphasis on the car's comfort and convenience features rather than its inherent sportiness.[4] Designations aside, the Thunderbird sold exceptionally well in its first year. In fact, the Thunderbird outsold the Corvette by more than 23-to-one for 1955 with 16,155 Thunderbirds sold against 700 Corvettes.[5] With the Thunderbird considered a success, few changes were made to the car for 1956. The most notable change was moving the spare tire to a continental-style rear bumper in order to make more storage room in the trunk, and an optional porthole in the removable roof was offered and often selected by buyers. However, the addition of the weight at the rear caused steering issues. The spare was moved back to the trunk in 1957 when the trunk was restyled and made slightly larger. Among the few other changes were new paint colors, the addition of circular porthole windows as standard in the fiberglass roof to improve rearward visibility, and a 312 cu in (5.1 L) Y-block V8 making 215 horsepower (160 kW) when mated to a 3-speed manual transmission or 225 horsepower (168 kW) when mated to a Ford-O-Matic 2-speed automatic transmission; this transmission featured a "low gear", which was accessible only via the gear selector. When in "Drive", it was a 2-speed automatic transmission (similar to Chevrolet's Powerglide).(Low gear could also be accessed with wide open throttle.)
The Thunderbird was revised for 1957 with a reshaped front bumper, a larger grille and tailfins, and larger tail lamps. The 312 cu in (5.1 L) V8 became the Thunderbird's standard engine, and now produced 245 horsepower (183 kW). Other, even more powerful versions of the 312 cu in (5.1 L) V8 were available including one with two four-barrel Holley carburetors and another with a Paxton supercharger delivering 300 horsepower (220 kW). Though Ford was pleased to see sales of the Thunderbird rise to a record-breaking 21,380 units for 1957, company executives felt the car could do even better, leading to a substantial redesign of the car for 1958.
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