diffrence in f250 and f350 front end

[ole96stroker]

okay so can anybody tell me if there's any diffrence in a f250 and a f350 front leaf spring's, i was looking at a f350 today and it looked like mine but flipped upside down to make the front end higher. Can i do this? thanks

[Diesel_brad]

No.

A F250 has a spring rate of 3,486 lbs

A F350 has a spring rate of 2,200 lbs

the reason the F250 has a Higher spring rate is because the TTB has to follow the ARCH of the axle, while the solid axle just moves up and down.

That is why F250 springs ride like complete AZZ with a solid axe conversion.

[JSchuricht]

To add to what has already been said, the 250 springs are a negative arch. You can use the 350 springs as long as you use a 350 axle.

[351fifty]

my 250 springs have no arch, just a slight positive but almost none, and my 350 springs are all positive