General Motors might have deleted really quick it's power figures for the new 6.6-liter Duramax turbodiesel V8, which was posted on its official GM Powertrain website, but it was enough for us to confirm the heavy-duty engine's output.
GM is debuting its 2017 heavy duty pickups at the Texas Motor Speedway in Fort Worth, and we've got the main hints on its future figures. What are they? Exactly what GM sought to swipe from its website. 445 horsepower at 3,000 rpm and 910 lb-ft of torque at 1,600 rpm. The engine sports the same dimensions as before- a 103 mm bore and 99 mm stroke- but makes significant power gains, mainly through use of a new turbocharger.
The previous Duramax generation made 397 hp and 765 lb-ft. With the boost, GM slots itself between the Ford Super Duty and Ram 2500 in terms of maximum torque. GM’s diesel-powered 2017 heavy duty pickups sport a hood scoop designed to provide 60 percent of the air reaching the engine. The supply of cooler air benefits overall power output, while boosting performance in hot weather and under heavy loads. The 2017 Chevrolet Silverado HD and GMC Sierra HD go on sale in early 2017.