Numbers Matching Super Duty 455 Trans Am To Cross The Auction Blocks

1974 Pontiac Trans Am Super Duty 455The 1970s was a tough decade for musclecar enthusiasts. Having spent the prior decade getting used to the big three putting out high-powered big blocks and potent small blocks, the mid -1970s brought us gas wars, emission standards, and the demise of the musclecar era. There had been a few names in the prior years that caught everyone’s attention: Cobra Jet, Hemi, and the Super Duty 455 were among some of those engines.

Cars like this original, numbers matching 1974 Pontiac Trans Am Super Duty 455 with its big-block V8, sporty styling, and rock star attitude were a middle finger to the luxury and forthcoming economy cars. This Trans Am sits with only 9,500 miles on the clock, and the car has gone through three owners and a recent restoration to bring it back to its heyday.

The Super Duty cars were identified by the SD-455 decal on the shaker hood, as well as the ‘X’ in the VIN denoting the big 455 mill. The original Muncie 4-speed tranny is still there, as is the original sheet metal which has received a new coat of the factory Mayan red. It also has power steering, power brakes, power windows, AM/FM radio, and the original upholstery. This TA still possesses that classic 1970s musclecar appeal – even some 40 years later.

The Trans Am received a few different powerplants during this generation, but the SD-455 was one that lasted only two years – 1973 and 1974 – and found its way into this red beast, making it highly collectible. Even more rare was the SD-455 Formula, of which only 101 were made during this span.1974 Pontiac Trans Am SD 455An interesting and little known fact is that the 455 Super Duty engines were actually hand-built race engines done as an off-assembly operation. They were then detuned to meet EPA standards, but still had a rating of 310 and 290 horsepower for 1973 and 1974, respectively, however, some sources claim those numbers to be quite a bit on the low side.

It will be interesting to see what this car fetches at the upcoming Barrett-Jackson Las Vegas auction. The car has no reserve and Super Duty Trans Ams and Formula Firebirds currently sell in the $80,000 range. A mint, low mileage example like this should fetch a pretty penny, we’ll just have to wait and see. Where do you think the price will fall on this one?1974 Pontiac Trans Am Super Duty 455 rear

About the author

Josh Courter

Josh Courter is a Power Automedia freelancer with a serious passion for anything custom. Rods, classics, sleds, and even motorcycles provide inspiration for Josh along with his passion for automotive history.
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