Muscle Car Of The Week Video Episode #109: 1974 Pontiac Trans Am Super Duty 455
http://www.mu...eek.com/forum - 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 from the Brothers Collection.
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