I'm a day or two away from ordering my new front 4" leaf springs/wheels/tires. As some know I have pro comp 22210 diesel/v10 2" front leaf springs on my 5.4 powered f350 for five years now I think and have absolutely ZERO problems with the. With that the 2" spring is 430lbs per inch and hasn't sagged or anything funny like that under my truck. SO I'm looking at pro comp 22410 4" front leaf spring for diesel/v10 at 130 a piece with free shipping and I assume will have the same ride and hold up just like the 2" spring I have already OR go with tuff county Ez-ride #28490 4" spring with a 605lbs per inch load rating and $300 a piece with free shipping???? So I basically want to know what is Ford oem spring rates? I've tried looking online, I've tried searching on here with no luck. So does anyone have the specs?

 

no one has a spec sheet on the OEM leaf springs?

 

I've been trying to find the same information for my 2014. I think I've found the weight rating but not the spring rate.