The Duramax V8 L5P has a displacement of 6.6 liters, which is slightly smaller than the 6.7L engines offered by Ford and Ram. Despite this, the L5P delivers 470 horsepower at 2,800 rpm ...

The 6.6 Duramax is one of the most powerful engines for heavy-duty trucks like the Chevy Silverado and GMC Sierra, but how ...

We will make the 2020MY Duramax available for dealers orders soon ... GM can't release the numbers that will show how the two engines stack up when considering fuel economy and tow ratings.

For the ZR2, nothing. The Silverado's flagship off-road trim is available only with the Duramax and the 6.2-liter V-8, and ...