The sticky doesn't appear to have current spring information that matches door stickers. For example, my door sticker says "WWPP" with a Front GAWR of 4400 and Rear GAWR of 6100.

No charts I can find in the technical stickies seem to match?

It seems after the 2005 year or so things changed and the charts don't reflect that. The springs for the new Super Duty's begins with Model Year (MY) 2005.

Any updates to the sticky coming? Or maybe a new chart in a new section for the Super Duty trucks that breakout different than the earlier ones. This grouping seems to blend two different year "groups".

For example:



For my particular 2015 F-250 Super Duty, 6.2L there are two "W" springs indicated, but with two different part numbers. And the Spring Numbers from before as listed in the "Sticky" don't match the new data either. Ford doesn't list the information in the parts information online (that I have access to), so the only one I can find is listed above (4400 as stated in the parts description).

Let me say up front this is not a criticism. The technical information seems to be incorrect or out of date, and the grouping of such a large number of years is not helping the sticky it seems. Any updates coming?

 

You should call a dealer parts dept. and get the part number that matches your VIN.

AFAIK Ford stopped publishing the spring rates around 2005 so there isn't much out there. They have a computer program that knows what the rates are for all the available spring PN's and it pick what spring a truck gets based off the build options, then it's all tied to the VIN. It makes buying used springs a gamble unless you have access to the door sticker on the truck they came from.

 

Yes, you have identified one of several issues with having such a wide expanse of model years piled into a single forum. The 18 year coverage of the 1999-2016 Super Duty forum is an unfortunate evolution over the 25 years since FTE was founded, and one that is difficult to correct retroactively.

Proactively, FTE has recently separated the 2023+ Super Duty forum from the 2017-2022 Super Duty forum, and even then, we did not get the go ahead until two years after our members presciently requested it. So we are doing better, but we still have room for improvement. While it is impossible to undo the past, we hope to avoid the same mistake in the future.

What you have encountered with the change in part numbers for the rear springs of your 2015 Super Duty... is related to a spring design change that occurred in calendar year 2007 (which is why all of the rear spring part numbers that you found begin with the number 7) for the 2008 model year. Note that CY 2007 / MY 2008 lands right smack in the middle of the range of model years 2005 - 2010 that you had guessed that a rear spring change was made. You narrowed it down fairly closely.

In calendar year 2007, for the 2008 and up model year, Ford changed the rear leaf springs, adding 8" in additional length. To accommodate these longer springs, Ford moved the forward rear spring hangars off of the common attachment with the cross member immediately ahead of the rear axle, and relocated these spring hangars further forward on the web of the frame rail, offset from the cross member.

There is no physical way that a rear leaf spring pack from a 1999-2007 Super Duty pickup will fit a 2008-2016 Super Duty pickup. The newer springs are 8" longer, and the spring hangar is that much further forward on the frame rail web. Ford made this change to increase ride comfort, and a surprising number of enthusiasts with older 1999-2007 Super Duty pickups have actually drilled out the rivets that retained their spring hangars to the frame, and moved the hangars from their original positions forward to a new position to match the location on a 2008+ frame, and drilled new mounting holes in their original frame as required... just in order to get the longer springs you already have in your 2015 pickup.

Chassis cab rear springs were not changed, and remain shorter than even the original 1999-2007 pickup rear springs.

Ford also changed the front springs a few years earlier, in calendar year 2004, for the 2005 model year, going from leaf springs to a 3 link radius arm coil spring system in 4WD trucks. This front spring change applied to all Super Duties, including the chassis cabs.

And this illustrates one reason for how the 1999-2016 subforum evolved into one monolithic juggernaut of a forum that is too big and broad of an elephant for folks to find a good fit with... Ford trickled in major engine changes without changing the body style or appearance. Ford introduced the 6.0L diesel engine (a huge change, the significance of which was not fully understood at the time) in the middle of 2003, with no body, interior, or suspension changes. Independently and incrementally, Ford changed the rear cab window from gasket set to sealant set, and changed the cab vents from rectangular to oval, and changed the grab handles from single sided to double sided. Ford slipped in the front suspension change in 2005, with front grille and dashboard refresh, along with some tweaks to the valvetrain of gasoline engines and a built in trailer brake controller. Then Ford snuck in the rear suspension change with an all new front clip, and all new 6.4L diesel engine, coinciding with a new product offering of an F-450 pickup, and some subtle sheet metal crease changes, along with front and rear tail lamp changes.

To those unfamiliar with the details, the changes may not even be noticed, nor understood. To those who know a little about the Super Duty, the changes may seem insignificant. To those who are trying to buy replacement parts, the changes make all the difference in the world.

 

Thanks! I'm putting a spreadsheet of the front spring part numbers, and the spring rates I can find for 2011 - 2016 F-250 with the 6.2L, all cab types.

I'll create a google spread sheet and post a link here a little later. It has a few holes in the data, but it's the best I can find for now after looking at door stickers, VIN information and FORD parts resellers.

 

This is wonderful for you to do. I have already noticed your attention to detail from your other posts, which inspires confidence in any spreadsheet that you create.

Enough confidence that I will put your spreadsheet into the Tech Folder.

I only ask that you also reduce what you create into a pdf file, or a jpg file, because Google, at any time, for any reason, or no reason at all, can make spreadsheets shared via the Google platform disappear. This has happened to more than one outstanding member of FTE who contributed hundreds of hours of time to creating spreadsheets for FTE members, that Google vaporized, for unknown reasons. The main example I am thinking of is the work of @Phoenixfla . Another example is the work of @ZooDad .

Unlike the work of the two members mentioned in the paragraph above, where a living document was needed that could not be fixed, because the information curated was dynamically changing all of the time as new information flowed in.... the work that you are doing is fixed in time, and is unchangeable, as all of the truck applications you are researching are now nearly 10 or more years out of production. So in your case, you can freeze frame the data you have gathered into a fixed document (image file or pdf, so that members do not need to have a spreadsheet program to open it). If you later find new information and wish to edit your spreadsheet, edit away and make a new pdf or jpg, and I will be happy to update the attachment.

The Ford truck community at large thanks you in advance (even if they don't know it yet) for your interest in the various springs that Ford offered for 6.2L equipped Ford Super Duties.

 

Thank you for the kind words! Here is a .jpg of what I've put together so far:



If anyone has any data that I can add to this, that would be great! Specifically the spring codes from your door sticker with the front GVWR number so I can match the door spring code to a weight and update this listing accordingly.

What would be even better would be a picture of your door sticker with VIN. That way someone can reference the VIN for the exact spring at the parts counter if it becomes necessary (I've been to some dealerships that won't order parts without a VIN to tie to the part number).

The information above is coming from research I am doing on trucks that are listed for sale (eBay, Carfax, etc.), BUT that lacks some information that would be helpful if I could actually see the whole door sticker to get the information.

Also, if anyone has the above springs that are new and can accurately measure the length I will add that to the chart also.

Regarding the length of the springs, I can't believe some of what I am finding on the web (shocking!), so I would like to get actual, true measurements if possible (to the 1/8" level for detailed comparisons).

If anyone has a great relationship with their FORD dealer and can get that info I would greatly appreciate it. Even one piece of data adds to the collective knowledge, so thanks in advance!

I would like to make this a useful tool for the 2011-2016 Super Duty 6.2L folks looking for FRONT spring information. While I am working specifically right now on the F-250 Super Duty range, some of the data will apply to F-350 as well (and some may cross over to the diesel crowd too). I will keep digging into this and updating this every so often as I find more information.

Thank you to FTE for all the great help on my truck - I hope this helps someone like this site is helping me.

 

Below is an example of what I am putting together in the RAW data so I can consolidate the information in the spreadsheet I posted earlier. So the more door stickers that get posted, the more I can fill out the chart and figure out the various spring ratings and what option package they relate to.

PLEASE SEE A LITTLE FURTHER DOWN FOR THE LATEST UPDATE. IF YOU COMBINE THE INFORMATION FROM BOTH LISTED CHARTS YOU WILL BE ABLE TO PICK YOUR SPRING RATE AND THE DESIGNED LOAD SPRING HEIGHT.

 

Can’t tell you much about the truck but I bought the rear springs from this truck when it was new and the owner put a lift kit on it.

 

Perfect, thank you!

 

Here is the latest Snapshot of the data so far (there's a lot more, but this is a screen capture) and there is an interesting pattern emerging:





https://vpic.nhtsa.dot.gov/decoder/Decoder
(Verified on final list)

 

@2015 F-350

I had been intending to provide you with this for a while, but could not find the file.

Today, I finally stumbled across it on one of my hard drives.

If you provide more details about your truck, I can provide you with more detailed information.

Your profile says F-250, while your username says F-350, and you have no vehicle details in your signature.

Year
Model
Engine
Fuel Type
Transmission
Rear Axle Ratio
2WD or 4WD
Cab (Regular, Super, or Crew)
Bed (short or long)
# of Rear Wheels (SRW or DRW)
Wheelbase (if known, otherwise this can be determined from Cab and Bed lengths combined.)

In the meantime...





You've done an outstanding job gathering info from VINs in the field. The combination of your field data with the spring codes on the Federal Certification Labels, and the Ford Source Book data I have posted just now, should help triangulate the spring information you are looking for, and help all future FTE readers as well.

 

@2015 F-350

Some of your recent prior posts revealed that you have a 2015 F-250 Super Cab XL with a 6.2L gas engine, perhaps with a long bed.

Therefore, the following page of GVWRs and spring ratings would appear to be applicable for your current application.

 

I signed up for a FordPro account yesterday and am stumbling around the site looking for that type of info - Thank you!

My truck is as follows:
F-250 Super Duty, Super Cab, 6.2L XL 142" 4WD (10000 GVWR) with special order package for a governmental agency. My front springs show as 4400, even though the nominal "base" should be 4800. Has skid plates, E-locking rear axle, 3.73. I have the window sticker but as you know, it's not as detailed as one would like. 1FT7X2B63FEC56622. SPR (WWPP). Two up for springs would be normally be 5600 but in my case it's 5200. I'm still going to go with the 5600 though as I've got a winch and a very heavy bumper up front. I don't see a reason for the plow springs at 6000 - seems like it might be too much for me and I don't have a diesel.

 

Do you have an FIN?

Can you post your Federal Certification Label on your door jamb?

I sense a mixup between front GAWR and front spring rate. The two specs are not always the same.

You've posted in a lot of different spring threads. That's perfectly alright, nothing wrong with that. But it does get confusing when trying to narrow down the facts that are specifically relevant to your truck and your objectives.

I think you may have quoted a photo of a door jamb sticker that I thought was yours but that turned out to be someone else's.

I also think I once thought you were wanting to know about the differences in rear springs, when you were actually talking about front springs.

So I accept all blame, but I want to get on the right page going forward.

There are two potential misconceptions that may need clarification.

1. The gap between your axle and frame bump stop.

You reported that you perceived the bump stop gap to be "too short", and based on your estimation of what that gap should be, you have assumed that your springs are weak.

That may not be a valid assumption, if the premise is based on an invalid estimation.

A more accurate estimation for normal front suspension height specification is established in the industry as the "Z" height dimension. An alignment shop will have this specification for most domestic brands of trucks.

Unlike trucks of the previous century, modern pickups and SUVs have bump stops that are engineered to engage sooner, prior to suspension travel reaching full jounce. By contacting the bump stop earlier in the axle's upward travel, a second stage simulated spring rate is added, and the harshness of engaging the bump stop is reduced.

Graduated engagement bump stops are designed with all manner of schemes to offer little resistance upon initial contact, with stiffer resistance at full jounce. From domed tips, to grooves carved in the sides, to accordion shapes, to being hollow inside, modern day bump stops are not the bump stops found in our father's Oldsmobile.

So don't judge spring fatigue by the gap between axle and bump stop. If you still believe that your springs have fatigued, then have the Z height specification checked. Each vehicle manufacturer establishes not only the height measurement, but the method as well as the location points where the height is to be measured. An example might be the distance between an established reference point of a sprung component on the chassis... to an established reference point on an unsprung component of the axle.... compared to a specification established for that location of measurement.

2. The Front Gross Axle Weight Rating is can be a separate specification from the Front Spring Rating. The front springs could be rated at 4,800 lbs, while the front GAWR is 4,400 lbs, due to some other component in the front axle, such as the OEM tires and wheels accompanying that truck, being rated for less than 4,800 lbs.

That is why I suggested that you post your door jamb label, so it is understood what rating you are talking about, front spring pair rating, or front axle weight rating.

 

I did see that regarding the tires (tires and wheels effect on GVWR). Good info in the FordPro site for sure!
The truck I am researching:

SPR is WWPP

Based on the stickers I'm seeing, it would be easy to assume the 4800 LB rating is with LT275/35R18 tires with 18x8.0J wheels.
For example:


SPR is VVPP

BUT Look at this one with the same tire/wheel combination:


SPR is WWPP