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1970 Pontiac Trans Am 1976 Pontiac Trans Am 1978 Pontiac Trans Am 1981 Pontiac Turbo Trans Am 1987 Pontiac Trans Am. The Trans Am was a specialty package for the Firebird, typically upgrading handling, suspension, and horsepower, as well as minor appearance modifications such as exclusive hoods, spoilers, fog lights and wheels. Introduced for ...
The 1974 models featured a redesigned "shovel-nose" front end and new wide "slotted" taillights. The 400, 455, and SD-455 engines were offered in the Trans Am and Formula models during 1974. A June 1974 test of a newly delivered, privately owned SD-455 Trans Am appeared in Super Stock and Drag Illustrated. With an unmodified car and a test ...
However, the engine used in these Trans Ams was the same regular production 455 taken from the big body cars Pontiac was producing, and output 200 HP with a torque rating of 330 lb⋅ft at 2,000 rpm. [17] The 455 HO package was only available to late model year Pontiac Firebird Trans Am's, and was mandatory with a 4-speed transmission.
The SD 455 was available for one more year in the Trans Am. As emissions regulations were increasing, two of the three iterations of the 455 cu in (7.5 L) engine were discontinued after 1974, with the final version of the 455 remaining available through 1976.
Trans-Am production cars were factory-built pony cars based on vehicles raced in the Sports Car Club of America Trans-Am Series. These cars were used largely for homologation purposes, but also as promotional tools for the series. The first Trans-Am street car was Chevrolet's Z/28 Camaro, which entered production in 1967. By 1970 six makes were ...
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Cars magazine tested an SD-455-equipped 1973 Pontiac GTO and chose it as Car Of The Year, yet that engine never made it to production in a GTO or other Pontiac A-body, but would be limited to the Firebird Formula and Trans Am. 1973 Chevrolet Chevelle SS and 1974-1976 Chevelle Laguna S-3 — Offered with a 350 small block or 454 big block V8 ...
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