“Pickup trucks are vehicles that people buy and drive based on the spec sheet,” he said. GM is in third place behind Ford and Fiat Chrysler Automobiles’ Ram brand in heavy-duty pickup truck sales, he said.
Increasing the torque and horsepower was a mandatory move, Sullivan said, for Chevrolet to compete with Ford’s new generation Super Duty pickups. “They won’t understand all the incremental improvements the engineers have made.” “People will think GM just stuck a new turbocharger on it,” Sullivan he said. When towing 10,000 pounds, acceleration from 50 to 70 mph takes 10.6 seconds, 1.5 seconds quicker than the previous model.Īlthough the Duramax is a new generation engine, Chevrolet might have difficulty marketing it, said Dave Sullivan, manager of product analysis for the AutoPacific consulting firm, because it has the same displacement as the engine it replaces. The zero 0-60 mph acceleration for an unladen Silverado 2500HD crew cab four-wheel-drive model is 7.1 seconds, seven-tenths of a second quicker than the previous model, he said. The increased power and torque are paying off with improved performance by the truck, said Eric Stanczak, chief engineer for GM’s full-size trucks. They also equipped the 2017 Silverado HD with a new vehicle air intake system that uses a hood scoop to drive cool, dry air into the engine to maintain cooler temperatures during difficult conditions, such as trailering on steep grades. It also is quieter than the engine it replaces. In the new generation engine, GM engineers has designed a new camshaft profile, a new cylinder head and a new electronically controlled, variable-vane turbocharger to allow the engine to produce more power with lower exhaust emissions. To set the record, the truck had to travel 100 meters, or 328 feet, without the flag touching the ground. flag that measured nearly 40 by 80 feet, an area of 3,186-square-feet, to fly from the Silverado. (Photo: Jerry Hirsch/Įngineers rigged a U.S.
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