The concept of diesel performance used to be a contradiction. It often involved bolting an expensive aftermarket turbo system onto a heavy truck barely capable of getting out of its own black cloud.

For most hot rodders, diesel performance usually means giving a truck more pulling power to get over a hill with a car trailer in tow. But a diesel engine on the race track? We're talking sled pulls, ...

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 ...

Introduced in 2001, the Duramax V8 turbo diesel family was continuously improved over the years until the L5P that GM uses in heavy-duty trucks. Fully stock, the 6.6-liter mill develops 445 horsepower ...

The Iconic 2011-2016 6.6-liter LML Duramax V-8 engine is the capstone of GM’s Pre-L5P turbodiesels. Duramax. It's a name that truck enthusiasts instantly associate with Chevrolet and GMC heavy-duty ...

When choosing the right truck for you, what's under the hood determines many factors. Horsepower, torque, towing capacity, and fuel economy are just a few of the considerations that differentiate one ...