General Motors quickly deleted the power figures for its new 6.6-liter Duramax turbodiesel V8 after they were posted to the GM Powertrain website, but we now have confirmation of the heavy-duty engine's output.

TTAC's Matthew Guy has just sent us the figures from the Texas Motor Speedway in Fort Worth, where GM is debuting its 2017 heavy duty pickups.

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.

GM didn't disclose when the new engine would be available.