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.

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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, ...

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 ...

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 ...

Mainstream diesel performance hit a home run when Dodge introduced the Cummins-powered Dodge Ram in 1989. In stock trim, the trucks were reliable yet underpowered, but it wasn’t long before ...

Theo has dedicated his life to cars. He has studied the only Automotive Journalism course in the world located at Coventry University and describes this passion as a clinical obsession. Give Theo four ...

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 ...

General Motors' Duramax engine family is one of the three leading names in diesel engines, right up there with Ford's Power Stroke and Cummins' diesel engines — like the legendary Cummins 6BT — ...

The L5P Duramax diesel V8 is what powers heavy-duty work trucks like the 2025 Chevy Silverado 2500 HD and is an amazing powerhouse. It didn't exactly start off that way back in 1984 when GM first ...