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The duals has alot more torque pulling a sled. Low range 1st gear it will pull alot of weight. Singles you need the 8.3 with the fuel turned up you dont realize how much low end power you loose with the larger tires. Stump pulling is childs play. Hooking 30k of concrete to the back of the truck...

The 8.3 is quieter. Will start easier in the cold. Seems a bit better on fuel. I have had a few trucks with newer dated 250s and they were nice trucks. The 8.3 has a lot of advantages though. It's the same with the older style and newer style trucks the old schoolers seem to prefer what they...

I have found most of the 6CTA's need 2 turns on their fuel screw to really open up. Once the turbo is fully spooled full power is available.