Pontiac Trans Am 1974 Super Duty 455
It’s no secret that Muscle Car performance was on the decline after 1970 or so, but Pontiac engineers pressed on when they created the Super Duty Trans Am package, which was still a screamer in 1974. The SD-455 was a remarkable engine, a legit race-bred machine among the plummeting compression ratios and horsepower levels of other V8s of the day. This is a great example of a low-mile and correct 1974 SD-455 Trans Am..
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