To go low or not to go, that is the question?

Tiffany,
If you drop the front axle enough, you have changed how the motor sits, It will tilt toward the front slightly, more than it did. The truck was designed to sit level. If you change the angle of the drive line, that can out a bind on the input shaft from the transmission to the front rear goes into the power divider. Your front differential has no power to it until you use hit the differential lock switch in the cab. When you change the angle of the drive line, You are putting an uneven load on the input shaft gear. This causes the differential to fail prematurely. Ever notice if you dump your air bags, and you drive down the road and forgot to fill them. The truck drive train whines and vibrates until you fill the bags. Same thing as changing the angle of the front of the truck.

 

I'm going to have to chime in on this last post... again... You need to know this... The steer axle hieght will not have any effect on the driveline... I don't know of any semi tractor that doesn't have at least one hanger bearing that will be the driveline high point... from there the driveline MUST have a slight downward angle for the u-joints to function properly. Now that you've graduated Driveline 101, let's continue. If the rear suspension is not in OEM specs for ride hieght... If your trucks driveline yolks, u-joints, slide joints, or hanger bearings are bad or bound up in any way... this is your focus... Not the steer axle hieght. This is fact... I have air ride over springs on my 359, dashboard adjustable up to 8" of ride hieght, it does not effect the driveline operation in any way. The only thing it will effect is ride and handling. Too much overthinking is not constructive... Find the problem in the driveline or rear suspension... I'm hoping this is clear enough. Yes I'm ranting.