No overload spring
Cargo Master
Joined: Nov 2004
Posts: 2,751
Likes: 3
From: So Oregon
Here's a link to a post from someone that asked Ford directly, for a 2002 truck.
https://www.ford-trucks.com/forums/4...ml#post1733543
Maybe your local dealership can confirm the part numbers being the same or different, or tell you the difference.
https://www.ford-trucks.com/forums/4...ml#post1733543
Maybe your local dealership can confirm the part numbers being the same or different, or tell you the difference.
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
Since it seems the 05-07 got increased GVWR and spring ratings, I wonder if the 05-07 rear springs fit the 99-04 trucks?
Lead Driver
Joined: Dec 2006
Posts: 7,091
Likes: 145
From: San Diego, CA
I know that the '08 and up has a longer spring pack (by 8" or so IIRC), but I don't know about the '05-'07.
As for spring codes and overload springs, I thought it was pretty straight forward. And it seems that Ford doesn't even know either!
As for spring codes and overload springs, I thought it was pretty straight forward. And it seems that Ford doesn't even know either!
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
I send Ed the parts guy a message, he's gonna get back to me on the 05-07 spring swap.
Cargo Master
Joined: Nov 2004
Posts: 2,751
Likes: 3
From: So Oregon
Seems Ford only lists one spring, based on the link I provided (Ford customer service, regarding 2002 vehicle), based on the Ford "builders guide", and a local Ford dealership's parts department. Seems Ford is the only consistent place to find the information, whether it's right or wrong. There is two part numbers, but again, it's my understanding it's the overload that is the difference, not the spring pack. Have you heard to the contrary?
Logistics Pro
Joined: Mar 2002
Posts: 3,877
Likes: 84
From: Wake Forest, NC
There are different springs, but because of the "computer selected springs" I'm not sure anyone really knows what all they are. I've almost always had to have a vin to get the springs.
However, my truck has B codes and is only 8800lb gvwr.
Not all B codes have the aux spring. Not sure what trucks have A codes. Those are the only two I've ever seen.
The door sticker "spr" code will not tell you an auxiliary spring. The aux spring is not a separate part number, it's sold by ford as an assembly with the main spring.
05 up rear springs should be the same, but they use different coding.
However, my truck has B codes and is only 8800lb gvwr.
Not all B codes have the aux spring. Not sure what trucks have A codes. Those are the only two I've ever seen.
The door sticker "spr" code will not tell you an auxiliary spring. The aux spring is not a separate part number, it's sold by ford as an assembly with the main spring.
05 up rear springs should be the same, but they use different coding.
Logistics Pro
Joined: Mar 2002
Posts: 3,877
Likes: 84
From: Wake Forest, NC
Ok, I double checked. thought I had VB code, but I have VA.. oh well thinking of a different truck. But doesn't explain how if F350 have stock B codes they have the aux spring.
So then, are B's and A's really different rate wise, or just have the the aux spring.
oh well thinking of a different truck. But doesn't explain how if F350 have stock B codes they have the aux spring.So then, are B's and A's really different rate wise, or just have the the aux spring.
Posting Guru
Joined: Jul 2007
Posts: 1,543
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My '08 250 2wd cc lb has an gvwr of 9400 lbs. and it does not have overload springs, but the last one on the bottom is really thick. I don't think it had a trailer pkg, why would the gvwr be so high? On the door sticker it has 't' in the tr block whatever that means.
Cargo Master
Joined: Nov 2004
Posts: 2,751
Likes: 3
From: So Oregon
On your 2008 that's just what it is.
It's 9400 for the 5.4L, 9600 for the V10 and 10000 for the PSD in 2005, so that's just what it is. When the guys are talking about 8800 that's for a pre-2005 truck. It's considerably higher in 2005 - present for a F350 (unless you got the 10k package).
It's 9400 for the 5.4L, 9600 for the V10 and 10000 for the PSD in 2005, so that's just what it is. When the guys are talking about 8800 that's for a pre-2005 truck. It's considerably higher in 2005 - present for a F350 (unless you got the 10k package).
Lead Driver
Joined: Dec 2006
Posts: 7,091
Likes: 145
From: San Diego, CA
from my archives
There is a two-character spring code on the vehicle certification sticker on the lower doorpost behind the driver's door. The first character is the front spring code, and the second character is the rear spring code. A common spring code for a CrewCab 4x4 would be VB. The V means 5,200 pounds front springs, and the B usually means the rear springs on an F-350 SRW. However, some F-250s also have code B rear springs.
Any pickup can have any available front spring code - depending on options, and it doesn't matter whether F-250, F-350 SRW or F-350 DRW. Here are the spring codes for the front leaf springs on '99 thru '04 PSD 4x4 pickups:
T = 4,400 pounds @ground
U = 4,800
V = 5,200
W = 5,600 (rare on a pickup)
X = 6,000 (only with snow-plow pkg on a pickup)
Rear spring codes:
A = F-250 & Excursion (6,084 pounds @ground)
B = F-350 SRW (6,830 pounds @ground)
C = F-350 DRW (8,250 pounds @ground)
If you already have code B rear springs, then you already have the same rear springs that are on F-350 SRWs.
If you have Code U or V front springs, then you might like the code X front springs. In addition to giving you a little more weight capacity on the front end, they will give you a one to two inch lift of the front end.
If you wanted to really beef up the springs on your F-250, then put the code X front springs and the code C rear springs on it (they should bolt on). But be warmed it will then ride "like a truck"<V
</V
There is a two-character spring code on the vehicle certification sticker on the lower doorpost behind the driver's door. The first character is the front spring code, and the second character is the rear spring code. A common spring code for a CrewCab 4x4 would be VB. The V means 5,200 pounds front springs, and the B usually means the rear springs on an F-350 SRW. However, some F-250s also have code B rear springs.
Any pickup can have any available front spring code - depending on options, and it doesn't matter whether F-250, F-350 SRW or F-350 DRW. Here are the spring codes for the front leaf springs on '99 thru '04 PSD 4x4 pickups:
T = 4,400 pounds @ground
U = 4,800
V = 5,200
W = 5,600 (rare on a pickup)
X = 6,000 (only with snow-plow pkg on a pickup)
Rear spring codes:
A = F-250 & Excursion (6,084 pounds @ground)
B = F-350 SRW (6,830 pounds @ground)
C = F-350 DRW (8,250 pounds @ground)
If you already have code B rear springs, then you already have the same rear springs that are on F-350 SRWs.
If you have Code U or V front springs, then you might like the code X front springs. In addition to giving you a little more weight capacity on the front end, they will give you a one to two inch lift of the front end.
If you wanted to really beef up the springs on your F-250, then put the code X front springs and the code C rear springs on it (they should bolt on). But be warmed it will then ride "like a truck"<V
</V
Cargo Master
Joined: Nov 2004
Posts: 2,751
Likes: 3
From: So Oregon
Brian, do you think they have different spring packs, or the "B" references whether it comes with the auxillary/overload spring (I stated it backward above about A and B)? Do you think there are two different spring packs?
I'm going to leave it alone after this, but the trucks have the same springs; however, the F350 comes standard with the overload spring giving you a heavier overall rating. The F250 has the same spring pack, without the overload as standard; however, it does have the overload with a suspension "package".
I'm going to leave it alone after this, but the trucks have the same springs; however, the F350 comes standard with the overload spring giving you a heavier overall rating. The F250 has the same spring pack, without the overload as standard; however, it does have the overload with a suspension "package".
Lead Driver
Joined: Dec 2006
Posts: 7,091
Likes: 145
From: San Diego, CA
Brian, do you think they have different spring packs, or the "B" references whether it comes with the auxillary/overload spring (I stated it backward above about A and B)? Do you think there are two different spring packs?
I'm going to leave it alone after this, but the trucks have the same springs; however, the F350 comes standard with the overload spring giving you a heavier overall rating. The F250 has the same spring pack, without the overload as standard; however, it does have the overload with a suspension "package".
I'm going to leave it alone after this, but the trucks have the same springs; however, the F350 comes standard with the overload spring giving you a heavier overall rating. The F250 has the same spring pack, without the overload as standard; however, it does have the overload with a suspension "package".
I wonder what specific components they base the additional GVWR for the 350 on...
Cargo Master
Joined: Nov 2004
Posts: 2,751
Likes: 3
From: So Oregon
I guess I can't leave it alone.
Your GVWR doesn't have to do with what springs are under it. Your GVWR is pre-determined, it's 8800 lbs. It just is. What determined the GVWR is your cab style, your bed length and your engine (overall length, frame and engine). The GVWR of the same truck you have, but gas is probably 200 or 400 lbs less, but it'll have the same rear springs.
The F350 will get a higher GVWR, but it's essentially in name only. I say essentially because it does come with a higher block under the rear springs, which allows it to squat more before bottoming out (and an overload spring). If you have a F250, with camper package for example, it doesn't change the GVWR, it'd still be 8800 with or without the camper package, but it'd have an overload spring (and still have the same spring pack as the F350); however, the F350 would still have a higher GVWR even though the actual parts under it are exactly the same between the two trucks, save for the taller rear block.
Regardless of your suspension components, your GVWR is 8800, camper package (overload spring) or not. With an F350 your GVWR would be higher, regardless of the components under the truck. Your GVWR doesn't go up due to the springs under it. It goes up or down based on engine and overall length of the vehicle, and whether it's badged as an F250 or F350. Again, it may not make a lot of sense from a parts or engineering standpoint, but it's not so much about that. If you put a F350 block under an F250 they'd be the same, but the GVWR would never change. The F250 (yours for example) would always be 8800 lbs. If you put an overload spring under yours (or if it came with or without one stock) it wouldn't change the GVWR. Payload capacity could change depending on your options and passengers, but GVWR would not.
Your GVWR doesn't have to do with what springs are under it. Your GVWR is pre-determined, it's 8800 lbs. It just is. What determined the GVWR is your cab style, your bed length and your engine (overall length, frame and engine). The GVWR of the same truck you have, but gas is probably 200 or 400 lbs less, but it'll have the same rear springs.
The F350 will get a higher GVWR, but it's essentially in name only. I say essentially because it does come with a higher block under the rear springs, which allows it to squat more before bottoming out (and an overload spring). If you have a F250, with camper package for example, it doesn't change the GVWR, it'd still be 8800 with or without the camper package, but it'd have an overload spring (and still have the same spring pack as the F350); however, the F350 would still have a higher GVWR even though the actual parts under it are exactly the same between the two trucks, save for the taller rear block.
Regardless of your suspension components, your GVWR is 8800, camper package (overload spring) or not. With an F350 your GVWR would be higher, regardless of the components under the truck. Your GVWR doesn't go up due to the springs under it. It goes up or down based on engine and overall length of the vehicle, and whether it's badged as an F250 or F350. Again, it may not make a lot of sense from a parts or engineering standpoint, but it's not so much about that. If you put a F350 block under an F250 they'd be the same, but the GVWR would never change. The F250 (yours for example) would always be 8800 lbs. If you put an overload spring under yours (or if it came with or without one stock) it wouldn't change the GVWR. Payload capacity could change depending on your options and passengers, but GVWR would not.