Free horsepower. What a great idea. In the case of resonant manifold tuning, most commonly known as ram tuning, an engine can actually realize additional horsepower and torque simply by catching the ...

Owner Brian Ferguson says, "I use my 1997 5.9L Dodge Ram truck as an off-road toy and to tow a trailer with my dirt bikes. I wanted more low-end power—and reliability." When the 5.9L (360ci) Magnum ...

Dodge trucks have earned a fierce reputation by pairing stout chassis with some of the most powerful diesel engines ever sold in a pickup. I focus here on five Cummins and tractor-based powerplants ...

Here's the story of perhaps the most legendary diesel engine ever made, the Cummins 5.9L.