On Wednesday, Chevrolet confirmed the whispers: the new heavy-duty Silverado will be available with world-class grunt. When equipped with a 6.6-liter Duramax turbodiesel V-8, the 2017 Chevrolet Silverado HD and Sierra HD produces 445 horsepower and 910 pound-feet of torque. For spec hunters, that's less twist than the new 2017 Ford Super Duty's...
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