Cummins vs. Duramax is certainly an argument had often among diesel enthusiasts, but in a practical performance comparison, ...

What's the Displacement of the L8P? Just like the L8T this performance version is based on, the L8P displaces a glorious 6.6 liters! Yep, that's 400 cubic inches if you live in the country that walked ...

General Motors has been using Duramax diesel engines in certain workhorse models for nearly a quarter century. The 6.6-liter V8 version which powers Chevy Silverado 2500/3500HD and GMC Sierra Heavy ...

Two brand-new 2025 trucks battle for the win. Which one is a better choice: the half-ton GMC Sierra or the heavy-duty Chevrolet Silverado? A fuel-efficient 3.0-liter Duramax or a 6.6-liter Duramax V8?