f350 leafspring on a f250 - Ford Powerstroke Diesel Forum
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post #1 of 7 Old 04-09-2012, 10:19 PM Thread Starter
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Question f350 leafspring on a f250

Is this a good or bad idea upgrading my 04 f250 leafsprings to the ones used on a f350.

I tow two different trailers both are ball hitch, 1 is 4500lbs and the other is 9,960lbs. The truck sags under both loads. Is this caused by wornout OEM leafsprings?

Thanks
Ray

Last edited by rcoooper311; 04-09-2012 at 10:20 PM. Reason: incomplete post
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post #2 of 7 Old 04-09-2012, 11:08 PM
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Yes the springs do wear out. If your going to replace it with f350 springs that will help some but if they are old and worn out it won't help to much but some. Or you could put helper springs or air bags

I'm addicted to diesel and I step on it constantly!

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post #3 of 7 Old 04-10-2012, 04:38 AM
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F250 and F350 springs are the same thing.
The only difference is the block that is under them.
The F250 has a 1" shorter block under it.

Does your truck have the overload spring on top of the normal spring pack?

some F250's didn't come with this (mine included), but I think most if not all F350's did come with them.

If you search the subject you should get all kinds of hits

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post #4 of 7 Old 04-10-2012, 04:49 AM
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That's right I was thinking f350 was the f550 cuz the 550 comes with one extra leaf if I'm not mistaken. My other f250 I had came with the helper springs. But yeah if yours doesn't have it that would help a lot.

I'm addicted to diesel and I step on it constantly!

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post #5 of 7 Old 04-10-2012, 05:02 AM Thread Starter
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Thanks for the advice, how many leafs come on the standards spring pack? I don't think I have the helper spring on my rig. I will have to look and count them before I head to work.
I have thought about air bags with the compressor kit, but this set up can't be used if I add a 5th wheel hitch at a later date. Airbags complete run about 1000.00.
I am looking for the best fix without wasting money!
Ray
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post #6 of 7 Old 04-10-2012, 05:11 AM
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Believe me if you have helper springs you would know. But why can't you use air bags with a 5th wheel? But if you don't have helper springs that would probably be your best route for price

I'm addicted to diesel and I step on it constantly!

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post #7 of 7 Old 04-10-2012, 09:04 PM Thread Starter
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Airbags I have found won't work because where they bolt up to the frame is also where the 5th wheel mounts to the frame.
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