In 2006, The HUMMER H1 was offered as a heavily modified Alpha model. The HUMMER H1 Alpha model received up to 520 pound-feet of torque from a 6.6-liter Duramax turbo diesel engine. The higher ...

Case-in-point, this massive Hummer H1 from Mil-Spec Automotive that was ... Under the hood is a tweaked 6.6-liter Duramax diesel good for 800 horsepower (597 kilowatts) and an obscene amount ...

Considering the current state of the SUV market in the U.S., and specifically the horrendous sales figures of the Hummer brand ... t offer its new 4.5-liter Duramax in the large Hummers.

Mark your calendars, because we're calling today a watershed moment for the advancement of diesel's acceptance in the U.S. General Motors has just announced a new 4.5L V8 Duramax turbo-diesel ...