The first-gen Cummins engines cost a pretty penny today, and it's because these 5.9-liter diesels were fantastic, along with being so influential to the industry. Just how much torque does a 5.9 ...

The 6.7L Cummins is a formidable engine with impressive performance specs, but if you want to take it to the next level, ...

Cummins has put together an upgraded version of its 6.7-liter engine turbo diesel for RAM trucks - here's how much power this ...

In 2003, the popular heavy-duty truck offered the Cummins third generation of engines, the 5.9-liter inline-six-cylinder diesel. Another change was a switch to 24-valves over the previous 12-valve ...