Okay, time to set the record straight. Cummins is OWNED by FORD.....check it out yourself if ya don't believe me. Why would Ford not put a cummins motor in thier own pick-ups then you ask IJ. Because the international navistar_powerstoke is a far superior engine as far as overall power and fuel efficiancy. And you can talk horsepower all you want, but the proof is in the torque. Cummins 4and change, Powerstroke 550foot pounds torque. Fact, not fiction. We use our Ford's to haul horses all over, my wife does that is. We ran Dodges when the new Ram with the cummins first came out, all and all not bad. Once the new Ford Super-Duty's came out we have now owned four all with the 7.3l turbo diesel......dodge doesn't come close. Even other Dodge owners will tell you after they drive the Ford that the Ram doesn't compare. As for the Chevrolet diesel, it is flat out junk. Incase you are wondering it is made by Izusu, and while the Allison automatic does have a tremendous history of strength and durability, it has been nothing but a headache in the new Chev's. That is why their release was so delayed. There really are no trucks made to compete with the Dodge Ram, or the Ford Super-Duty. As for gas engines, I am not sure who is superior, but as far as diesel goes... the 7.3l Turbo Diesel is by far the best on the road !!!.