leaf springs code?
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leaf springs code?
I've got a 74 f250 4x4 that I'm doing the 99-04 super duty gas 8" BDS front springs conversion to or at least I'm going to attempt to but when I'm looking for the springs I need I keep running into people talking about the spring cose, so which spring code do you think would be best? And are the 8" BDS stock on the 99-04 ford super duty or is that an after market lift spring for that year truck?
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Joined: Feb 2007
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From: S/W Missouri, Polk county
I believe the spring code is a letter that applies to specific applications of leaf spring ability or application determined by GVW? And no the 8" BDS leaf spring is NOT STOCK by no means.
" got a set of SD springs from the junk yard and added my bottom stock leaf to them. Had to get me 4" or so. Add-a-leafs will ride terrible. For the rear, just flip the shackle, that will net you around 3" and will sit the truck a little more level. I spent $45 a spring pack for the SD springs, so I had a 4" lift under $100. Oh, I suggest making some front shackles 1-2" longer than stock, as the SD are around 1" longer, so they could bottom out on the frame. All in all the whole setup should get you 3-5" and a level truck. If the front sits too high you could also get F-350 rear blocks, they are 4" instead of the 2" that are in F-150 and F-250."
And here is some more info. https://www.ford-trucks.com/forums/1...l#post14696881
" got a set of SD springs from the junk yard and added my bottom stock leaf to them. Had to get me 4" or so. Add-a-leafs will ride terrible. For the rear, just flip the shackle, that will net you around 3" and will sit the truck a little more level. I spent $45 a spring pack for the SD springs, so I had a 4" lift under $100. Oh, I suggest making some front shackles 1-2" longer than stock, as the SD are around 1" longer, so they could bottom out on the frame. All in all the whole setup should get you 3-5" and a level truck. If the front sits too high you could also get F-350 rear blocks, they are 4" instead of the 2" that are in F-150 and F-250."
And here is some more info. https://www.ford-trucks.com/forums/1...l#post14696881
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
There are NO front or rear spring codes prior to March 13, 1981.
Once FoMoCo came up with these
codes, there was no way to determine the load rates of springs, because all that was listed was a part number.
Upper pic: front spring / Lower pic: rear spring.
Once FoMoCo came up with these
codes, there was no way to determine the load rates of springs, because all that was listed was a part number.Upper pic: front spring / Lower pic: rear spring.
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