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Would have guessed that such a would mill the hit street? But for those who appreciated performance, answer to it its was an their prayers! A powerhouse in a period of bland no-punch engines: That's what you would have to call the 1973 SD-455 engine. The engine could be defined as full- race, with tons of high- performance innards. Its advertised horsepower of 290 was a joke, as its 13-second performance in the quarter attested. The SD-455 power plant was available for the last time in I974 and produced 290 net horsepower and 395 Ibs-ft 35 of torque.

And why change perfection? That was the rationale for keeping the Trans Am the same for year »* number %£** four. During optional this model M Code year, Pontiac offered an two-barrel 350ci V-8 pow er r plant with a continuing-to-spiral-downward 160 horsepower, and with the net horsepower figures now becoming standard. 0:1. But moving in the other direction, the Code N 350 power plant, when yxfirGptt f)«i,,»' Stylish air extractors fefe highlights of the bird decal for this 33 and fender 1973 Trans Am flairs body were the style.

Requirements, a third brake light top of the hatch. 8-liter fuel-injected four-cylinder Chevy under the hood. 0-liter engines of the previous model year. The similar Am 1986 Trans even received a new 140-miles- per-hour speedometer. 1987 It was pretty- much status Firebird models, with the model designation The highlights quo for the 1987 GTA being the top top Trans Am version. new for the of this model were diamond- spoke, gold-centered wheels and articulated seats. One would have thought that increased per- formance in the 1987 models would have attracted more buyers into the showrooms, but it just didn't work out that way.