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Discussion Starter · #1 ·
I have a gas engine, but I think the springs are the same. I have the plow package, but my truck still sags too much with the plow on (fisher XV 9.5'). Does anyone know the spring code for the f550 with plow prep as well as the 450 with plow prep? I know with my old 05 it was "AA" and "BB". Has it changed? Thanks, Nick.
2016 F350 crew cab short bed srw.
 

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Discussion Starter · #2 ·
Is anyone even on this site anymore?
 

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What is your current front spring code?
 

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Discussion Starter · #4 ·
Plow prep. CCLL

I found the super duty spring codes, but not the ones for the F450-550
 

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Plow prep should be the 6k springs. I dont know if the 550 ones are much higher.
 

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If iM not mistaking, the X code is the heaviest spring that is with ford and it is installed with the plow package


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Discussion Starter · #7 ·

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My truck has plow prep and front springs are 5600.
 

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For an F250 that's the one spring over normal I'd guess.
 
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