In years gone by, the LLY variant of Duramax turbodiesel V8 powered vehicles such as the Chevrolet Silverado HD and GMC Sierra HD.

In the diesel engine arena, there are, arguably, few powerplants held in quite as high a regard as the vaunted 6.6L Duramax. The turbocharged beast is the brainchild of General Motors who, in 1998, ...

For decades now, the big three American automakers have been engaged in a game of one-upmanship over which company can fit the most powerful and torquiest diesel engines in their trucks. And, just as ...