Originally Posted by OkieGoat
New to the forumz and new to owning a dodge. I have an 01 15004x4 and was toying around with the idea of installing a 3" leveling kit and a 3" body lift and wanted to fit 37x12.50 military tires on it. Anybody know how this setup will fair? Or for that matter if it is even plausable? I've spent some time perusing the forumz and the interwebs and have yet to run across anything helpful... Any advice is appreciated and any other setup ideas are greatly encouraged.
At 3" you'll need new drop pitman arm, adjustable track bar, and longer control arms.
Body lift has no effect on this.
Running 37" tires on the stock running gear equates to a timebomb in general with these heavy trucks. Driving style will be directly proportional to the life of the drivetrain. If still running the stock gear ratio, then everything performance-wise will (assuming there is still some there now) fall off the cliff. A regear to 4.88 or changing to 3/4 or 1 ton axles. You cold get away with 4.56 but would need some engine mods to help. Oh and then the tranny may start crying if it hasn't already. Just typical for these trucks.
Not all trannies turn to mush. Just like everything preventive and active maintenance is necessary on these 2nd Gens.
Lastly, with the military tires I'm assuming you are referring to the Hummer type Goodyear tires and 16.5 double beadlocks. If you are intending on the beadlock wheels, then you'll have to run 8 lug. as you currently have 5 lug. Or did you already mod that? Example combo with 5 lug.
The tire size further requires the need for the suspension/steering changes mentioned earlier or you'll be putting the tire into the wheel well at your feet. You'd also need a minimum of 4.5" backspacing on the wheels to clear the control arms.
Height-wise with the the SL and BL you can clear the 37s.
Sorry if this bursts a bubble, but it takes a bit for change in tire size. Many of us here can help you out as you consider things further.