Which Differential for Truck Camper
Looking to purchase a new 3500 Single rear wheel crew cab 4x4 standard bed truck and haul a Lance 855S (about 3,000 lbs) camper. Plan to get the 6.0L gas engine which comes with a 6 speed auto trans. ...
Forum Discussion
Really it comes down to the gear ratios in your transmission. What is a 6-7-8 speed? Compare those ratios with your experience and you will find that you have at least 2 overdrive ratios and maybe a very low, 1st gear.
Our 2006 GMC has an Allison 6 speed, 3.37 gears (an 8.1-the 8.2 was never an engine installed at the factory)and the GMC will not go into 6th gear with the camper unless its flat, very flat and with the slightest rise it will drop to 5th gear.
We have installed slightly larger tires and our adjusted axle ratio is now 3.42.
We had a diesel and some things I miss, but when we needed a new truck we went with a used, very low mileage and hard to find 8.1 GMC.
Good Luck!
Our 2006 GMC has an Allison 6 speed, 3.37 gears (an 8.1-the 8.2 was never an engine installed at the factory)and the GMC will not go into 6th gear with the camper unless its flat, very flat and with the slightest rise it will drop to 5th gear.
We have installed slightly larger tires and our adjusted axle ratio is now 3.42.
We had a diesel and some things I miss, but when we needed a new truck we went with a used, very low mileage and hard to find 8.1 GMC.
Good Luck!
