New truck

[Faststreak]

I currently own a 2015 GMC 3500 single rear wheel. I carry a Hosts Cascade. I have done some significant mods to the truck, blistien shocks, heavy duty Timbrens, helwig sway bar, lower stable loads and 19:5 wheels. My question if I trade for a dually maybe a 2017, will I need any mods to carry the cascade?Those that want to know the Cascade is 4100 pounds dry. Those that carry a heavy camper, How much will a dually affect the mileage over the SRW? Thanks

[work2much]

We carry our Mammoth with just a shock upgrade that really didn't make much difference. Pretty much full time and 20,000 miles on the truck. We did get the factory air bags. I would probably not go that way again. Nothing wrong with it but does preclude the use of an aftermarket sway bar.

Looking forward we may go with a larger truck to tow and carry more stuff for full timing.

[jimh406]

The drw will carry it, but you might want airbags or similar to level it. Also, the tendency is to carry more stuff when you can. That will cause more suspension deflection.

I think the general rule of thumb is drw will cost 1 to 1.5 mpg with the same gear ratio, or more with a higher number ratio.

[donn0128]

Newer dually should do fine as is. Mileage? I would not expect any difference as long as everything else is equal. My 4.10 rear end Ram Cummins dually does a consistant 10.5-11.5 pulling my 13,500 pound fiver. I have a pin weight right at 3500 pounds and it hardly sags.