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The Plymouth Road Runner (or Roadrunner) is a mid-size car with a focus on performance built by Plymouth in the United States between 1968 and 1980. By 1968, some of the original muscle cars were moving away from their roots as relatively cheap, fast cars as they gained features and increased in price.
Chrysler introduced major changes in the design of the 1968 model Plymouth B-bodies and the GTX was given a completely new look. A new hourglass body replaced the previous rectilinear design. The high performance 440 was standard in the GTX as was the TorqueFlite automatic transmission, while it was an extra cost option in the Plymouth Road Runner.
1968: The Road Runner entered the Plymouth line-up. 1970: Duster coupe was introduced in the Valiant line for 1970 as well as the new E-body Barracuda. 1971: The British Hillman Avenger was imported as the Plymouth Cricket; it was discontinued in mid-1973. The new Valiant Scamp two-door hardtop was a badge-engineered Dodge Dart Swinger.
Forged connecting rods used the Wedge's 3 ⁄ 8 in (9.5 mm) hardware, as opposed to the Hemi's 7 ⁄ 16 in (11.1 mm), but would nonetheless have been considered high-performance parts. [ 1 ] The intake was to be a single Carter ThermoQuad , of greater flow than any previously used, on a dual-plane intake manifold, [ 5 ] while dual four-barrels ...
The 1968 model year was also the introduction of the Plymouth Road Runner that shared the same body as the Satellite and Belvedere models. The 1968 body continued through 1970, with new grilles in 1969 and a minor front and rear restyling for 1970, which was the last year for the Belvedere name.
Mantel took over the '68 car which has the longest performing history of any Hemi Under Glass ever constructed and becomes the third official driver in the brand's 50+ year history. [6] Mantel was only 6 years old when the Hemi Under Glass first took to the track. He has a wide range of driving experience from drag cars, road race, and movie cars.
Developed specifically for NASCAR racing, the Superbird, a modified Road Runner, was Plymouth's follow-on design to the Charger Daytona fielded by sister company Dodge in the previous season. The Charger 500 version that began the 1969 season was the first American car to be designed aerodynamically using a wind tunnel and computer analysis ...
Mark Worman wanted to document the restoration of a 1971 Plymouth 'Cuda, painted Hemi Orange, equipped with a 440 6 Barrel V8, a Heavy Duty 4-Speed manual transmission, and a 3.54 ratio Dana 60 rear axle. On July 5, 1980, the car was wrecked after the driver lost control in a 100 mph race with a pickup truck.