I don't know what's going on, Cummins are built to pull. This past weekend I loaded my Chevy on my dad's 35' gooseneck and brought it home, 15 miles. My last truck, (2006 Mega Cab 3500 SRW, G56, 3.73, 37s), screamed in 5th trying to hold 65 mph. Before anyone blames it on the 37s, my current set up is 2006 Reg Cab 3500 DRW, G56, 3.73, 33s, and it had the same problem. Intake, exhaust, programmer were all the same on both trucks.
*This is my 4th 2006 Cummins, all have pulled this trailer the same*
Old truck, (didn't haul both, just wanted to see if they fit).
New truck. The Chevy was about a foot too far back, but it was fine.
-AFE stage 2 intake with S&B filter and filter and pre-filter
-4" straight exhaust, no cat, not muffler
-Bully Dog Triple Dog
This past weekend it was pretty windy and I was driving straight in to it. I also know that my chevy is like pulling a giant shoe box down the highway. 5th gear, pushing as hard as I could, trying not to smoke my clutch, I was holding at 1200*. Each tire and wheel on the Chevy weigh around 250 lbs, and the rockwells weigh 1100-1200 lbs each. The rest of the truck is just a small block Chevy 1/2 ton 4x4, not that heavy.
I don't think the trailer is at fault? I've hauled the Chevy and a Jeep TJ on this trailer with my dad's Duramax, and it pulls it easy. It's not just his truck, he gets a new demo every 5,000 miles and I have pulled this with 6 of his trucks. I have also pulled the same set up on our shop truck, 2006 Reg cab 3500 DRW Duramax and it pulls it easy.
I would think that my black dually would tug this around all day long without breaking a sweat? Even unloaded, this trailer is a challenge to pull. I know it's a big heavy trailer, but should it be this hard?