Twenty-five years ago, the heavy-duty and diesel communities were forever changed by the addition of a Cummins I-6 diesel engine in a Ram Heavy Duty. Fast-forward to 2014 and Cummins is once again pushing the light-truck boundaries by leading the segment in torque output. Horsepower numbers might be sexy for sports car owners, but for us truck guys torque is king, and no one makes more torque than the optional 6.7L Cummins turbo-diesel. With a best-in-class 850 lb-ft of torque, a properly equipped Ram 3500 HD can tow up to 30,000 pounds. That’s an impressive number from a truck that has available creature comforts more commonly found in a luxury sedan. One big feather in Cummins’ cap is it is the only manufacturer whose engines are also found in medium and heavy equipment. Here’s to another strong 25 years.