The extremely tough and hard-working Ram Heavy Duty pickups stand tall and proud at the top of the Ram lineup. Available in 2500 and 3500 configurations, they offer a good selection of cabs and cargo beds. The 6.4-litre gasoline V8 generates 410 horsepower, but the real star is the 6.7-litre inline six-cylinder turbo-diesel. Imagine this: the high-output variant of this beast delivers 400 horsepower along with an incredible 1,000 pound-feet of torque.