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SAE gross hp ratings were tested with no accessories, no air cleaner, or open headers. In 1971, compression ratios were reduced in performance engines, except the 426 cu in and the high-performance 440 cu in, to accommodate regular gasoline. 1971 was the last year for the 426 Hemi.
The GTX received minor cosmetic changes to the tail lights and grille, as well as the side marker lights. An optional "Air Grabber" hood (standard on Hemi-engined cars) featured functional openings on both sides of the hood that were controlled from the dash. [4] The 1969 GTX had standard black lower-body side paint in place of the previous ...
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 ...
The 426 Hemi, in "Street Hemi" form, was produced for use in limited Plymouth and Dodge automobiles from 1966 through 1971, which have become collector's items. For example, a 1971 Plymouth Barracuda Convertible equipped with the 426 Hemi engine sold at auction for US$3.5 million in 2014. [21] 426 Hemi engine in a 1966 Charger
The 440+6 and 426 Hemi were available, though this would be the last year for them. The tall axle ratios with the 8 3/4-inch Chrysler and Dana 60 rear ends, as well as the wide and close-ratio 4-speed transmissions, could be had with any of the engine choices, though few cars were built with the six-pack or Hemi engines. Aerodynamics were much ...
The Chrysler B and RB engines are a series of big-block V8 gasoline engines introduced in 1958 to replace the Chrysler FirePower (first generation Hemi) engines. The B and RB engines are often referred to as "wedge" engines because they use wedge-shaped combustion chambers; this differentiates them from Chrysler's 426 Hemi big block engines that are typically referred to as "Hemi" or "426 Hemi ...
Then, in 1964 the new Chrysler 426 Hemi engine so dominated the series in a Plymouth Belvedere "Sport Fury", the homologation rules were changed so that 1,000 of any engine and car had to be sold to the public to qualify as a stock part, instead of just 500. This made the 426 Hemi unavailable for the 1965 season.
In a hemispherical cylinder head, when air enters the combustion chamber through the intake valve, it flows to the exhaust valve instead of being forced through the exhaust valve as pressure is built up in the combustion chamber. While Tom Hoover developed the 426 Hemi engine, cylinder heads can be interchanged between specific engines.