The largest US automaker has decided to introduce a new Duramax diesel engine for the 2017 model year – with the Chevrolet Silverado and GMC Sierra getting the new 6.6L diesel truck worth 910 lb-ft of torque.
The unofficial figures for the new powertrain are now in, malady with the mill packing 445 horsepower (331 kilowatts) and 910 pound-feet (1,221 Newton-meter) of torque – making it more powerful than the Ford Super Duty competitor, though the torque figure is slightly behind. The update is a major departure from the predecessor though – the latter had 360 horsepower (268 kilowatts) and 765 pound-feet (1,037 Newton-meter) of torque. These figures were leaked through the GM global propulsion product guide posted on the GM Powertrain website, all of them SAE J1349 certified.
The new engine will be built at the GM-Isuzu D-Max factory in Moraine, Ohio, and will be offered on the Chevrolet Silverado and GMC Sierra Heavy Duty versions for the 2017 model year. The engine will be mated to an Allison 1000 transmission. It will reign as the most powerful option in the segment – Ford has 440 horsepower and the Ram has 385 horsepower (287 kilowatts), and there’s even less – in the Nissan Titan with 310 horsepower.
Via GM Authority