I'm still waiting for the truck, the scheduled delivery date to the dealer slipped from November 11 to November 19. Depending on how things work out I may not get it until the beginning of December.
I contacted Bigfoot to get their input on the minimum cab clearance I would need. I couldn't get a firm answer that they hinted 1 1/2" should be enough. I was picturing the problem as the frame acting like a hinge between the cab and bed but they seemed more concerned about twisting and contacting towards the outside of the cab.
I would be concerned with only 1.5", personaly I would shoot for 3'' as a minimum but thats just me. I have watched the camper rock going down a wavy highway.
If I have to raise it then I'll probably shoot for more than 1 1/2". If I can get 1 1/2" clearance without raising the camper then I'll probably give it a try. My current truck has 2 1/8" at the minimum clearance point and it has been that way for two decades without problems, and I don't expect the new RAM to have more frame flex than my 24 year old K3500.
