A document containing official horsepower and torque numbers for General Motors’ new six.six-liter V8 Duramax turbo-diesel was located buried on the GM Powertrain internet site — before the company quickly deleted it.
GM’s new 2017 heavy-duty pickup trucks will wade into the nuclear torque war with a whopping 910 lb-ft of twist, with peak torque coming on at just 1,600 rpm. Horsepower is up by almost 50 to 445 hp at two,800 rpm — thanks in part to a new turbo style — whilst the 103 mm bore x 99 mm stroke remains identical.
The L5P’s 910 lb-ft of torque puts it midway amongst the Ford Super Duty’s 925 lb-ft and the Cummins-powered Ram at 900 lb-ft, nevertheless, its 445 hp rating leaves GM with the horsepower crown (versus Ram’s 385 hp and Ford’s 440 hp).
Thew new L5P Duramax is slotted for production at the GM-Isuzu plant in Moraine, Ohio, and will see action in each Heavy Duty Silverado and Sierra twins.
The accidental release comes just days ahead of GM’s new HD trucks are set to officially debut at the 2016 State Fair of Texas, where we ought to receive transmission and towing specs.
[Image: Common Motors]