Stock coil spring rate

[Diesel Addict]

I have an 06 F-350 that had "C" code spring stock, now i have a 6" fabtech lift. I was wondering if anyone knew or knew how to find the spring rate for the front coils? Just wondering I have searched on here and on the internet and can't seem to find it anywhere. I haven't called Ford yet but I can already imagine what they will say, "well it doesn't say here on the computer what they are so not sure what to tell you". Any ideas?

Thanks
Tyler

[F250SixOH]

Code C is 6000lb front end. Same springs I have. Stiffest you can get from the factory for the F250.

http://www.plowsite.com/archive/index.php/t-57287.html

[Diesel Addict]

So I assume these are light F-350 springs, what is the heaviest F-350 coil spring? Also thank you for the response. That is a help but I am really looking for the rate not capacity. My fabtech springs are 410 lb. springs which are 410 lbs. per inch.

Thank you

[F250SixOH]

Stiffest F250/350 front springs I mean. They are meant for the snow plow package. If I had an extra spring laying around I would rate it at school tomorrow and give you a printout.

http://www.fordf150.net/specs/05sd_specs.pdf

[Diesel Addict]

Okay thank you that makes sense! I am trying to see how my aftermarket springs compare.

Thanks again