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Chevelle enthusiasts had swapped rumors for years about a 1970 SS454 sitting untouched inside a collapsed Ohio barn. In May 2017, a grainy cell phone video finally proved the story true — and when the car came out after nearly 40 years, its original buildsheet was still tucked inside the door panel. Read on to find out what that buildsheet revealed about how, and why, this particular Chevelle was built.
Buick is not the first name most people reach for when the conversation turns to the quickest muscle cars of 1970 — which is precisely the mistake the Stage 1 package existed to correct. A GM rule change that year finally let Buick drop a full 455 into a midsize car, and period testers recorded quarter-mile times that embarrassed far louder reputations. Convertibles were rarer still. Read on for the numbers behind the most underrated muscle car of 1970.