I replaced the V codes with a set a X codes with under 5000 miles on them. Now they have about 50000 mules on them and they are flat. My friend has his factory X codes with over 200,000 miles on them and they still are arched. My truck is a ex-cab sb. His is a reg cab lb. Is there that much more weight on the front axle of my truck?

 

I have the stock springs all around and nothing has sagged from when I bought it in late '07. It has had around 1,500# in the bed since then. '00 CCLB 4x4 PSD w/ 148k, bought with 96k.

 

Your friend has the 7.3L? Long or short bed? If he's gas, big difference. If not, the longer wheelbase makes a difference as well. My wife is looking on CL for a cab-over camper and I'm looking on the web to replace my flat springs since I bought it at 220K. This project will be waaay down the calendar for me, because I have injectors on my short list.

 

He also has a 7.3.

 

Are the x codes from Ford or aftermarket? Have you checked the part numbers on the springs to confirm they are x codes? How much weight did the previous owner have on the springs? Just because they had low miles on them when you got them, were they abused by the PO?

 

I have confirmed part numbers. The po never even used it as a truck.

 

What shape are the bushings in?

Perhaps a fluke issue. I'd get them re-arched and install new bushings before dropping coin on new springs.

 

I actually just installed X-codes this spring, got a used set off a junker. They gave ,e about 2" of lift...and are very much NOT flat..... I'm guessing fluke, or just a lot of use.

If you have a shop that can re-arch them, I'd say that's probably your best bet.

 

Must be a fluke. When he gave them to me they still looked like they just came off his truck. When I first put them on they had some arch. But now after a couple years they are flat. Ill have to look into getting them re-arched.