rear springs

[smokey73]

I have a 2003 f350 dually and the rear springs seem weak don't hold much weight before it starts to sag. I was wondering if 450 rear spring will work to replace them ?

 

[NEVRNF]

No, F450 springs are shorter from eye to eye. The best option would be springs from an 07 dually as they have about #2500 higher rating then a 99-03. Next would be a 08-12 dually spring and replacement front hanger as the 08 up had an even higher rating. I am not sure about the 08-12 F450 tow boss if the spring has the same length eye to eye as a F350

 

[smokey73]

so the 07 are the same length?

 

[smokey73]

anyone else ?

 

[NEVRNF]

That is what i put on my E99. It has to be the 05 style truck not the new body body style with a 6.4

 

[smokey73]

to bring this to the top i just found a set of springs off of a 08 but they tell me that from 2005 to 2010 the springs are the same is this right ?

 

[rusty1161]

You might be able to use those springs with these http://www.pmfsuspension.com/08-Spring-Hanger-Conversion-for-99-07_p_8.html

I would just try airbags, maybe this no-drill kit http://www.truckspring.com/products/Firestone-Ride-Rite-Air-Spring-Kit-Rear__2484.aspx

Rusty

 

[smokey73]

with some reading i found D code springs that are 11+1 for 2003 to 2004 or the CC code spring for the 2007 that was i think 5+1 what one is better? ride is not a issue i don't mind a rough ridding truck i'm looking for maximum weight.