RYOTA - the easiest (and probably cheapest) thing to do is get the Firestones you need from Summit racing. The #2220 will definitely be better than the #2071, but you should be able to find the exact kit you need at Summit.

 

I've allways wanted to try taking that heavy spring out of the bottom of the pack,but never had the time, (also sure that if I did it it would be a mistake somehow)

 

I have run 30,000+ GCVW and 20,000+ GCVW - my Dodge is nice and level (stock suspension). I do notice that the rear lowers a bit when I hook up either gooseneck - but she is level and even. I also noticed that a minimum of weight transfer was seen at the front axle w/ either gooseneck. I have a 4x4, with no plow (in Miami, FL ?), or winch, w/ CTD. So I guess any need for a front system is pretty nil for me.

I note from one vendor on line that Timbren set up is 158.95 front, 203.95 for rear, and for rear only Firestone Ride Rite is 245.95, and Air Lift Super Duty is 233.79, so price wize a rear option doesn't seem too much different.

In my application, I see little need for front Timbren - but I might benefit (reduce lowering / inmprove control ?) from either Timbren or air bags for the back (my rig has a western hauler body, and the truck weighs in w/full fuel @ 8200#). I did note that Timbren lists capacity @ "8,600#", and Firestone is adjustable "3200-5000 # of leveling capacity per set" - so that might make a difference to someone ?

 

Right now, the rear of my truck sits an inch or two below the front. Bags will level it out nicely. I believe the bags might also bring the rear back up to where it originally sat (an inch or so above the front). Then I could raise the front to match the rear. I have a concern though. I believe (I could be wrong) the bags are only designed to help the springs, not replace them. If I had so much pressure in the bags to raise the rear to factory height (an inch or so above the front), then I'm wondering if the rear springs will actually be suspended by the air bags. In other words, I'm wondering if the bags would be doing 100% of the work, instead of only helping out the springs.

I also would like to get the overall height ov the bags too. Both the 2071's and the 2220's. Could somebody please measure for me?

 

The bags will not be supporting all of the weight. 1-2 inches is about 40psi in mine.

You can pysically watch the truck lift quickly if you are airing with a tank with 120psi. I usually air mine with just a compressor and it still moves so that you can see it. My point is that not a lot of air moves the truck pretty high when unloaded. The more weight you add then the springs sag more and the bags require more air to lift the same height.

The bags are lot like tires. If you unload them, they will be taller than with a load even though the air pressure is the same.

 

I think it is time to start a new thread. Your questions are beyond the original question of Timbren versus bags and focusing on technical installation of bags. Agree?

 

I can do that.