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Why the Sierra Classic 454 became GMC’s heavy hitter

Collectors chase the GMC Sierra Classic 454 because it captures the last gasp of big-block torque in a square-body truck.
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Six Decades Ago, General Motors Made Semi Trucks Carry More Weight By Turning The Truck Into A Cracker Box

Trucking companies and owner-operators have long been on a relentless quest to save money. If they can stretch that dollar just a little further, it can mean bringing a little more money. One of the ...