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Been wanting to get duals on my truck ever since I have gotten it, I am a high school kid so I of course just want my truck to look cool I guess . Bought the truck with a flatbed and just don't like the fact that my tires are a foot or two in from the edge of the bed. It is an 84 f250, found a 90s (bricknose) f250 with duals in junkyard, was wondering if I would need to get the whole axle or if I could just get the wheels and bolt them on. But I doubt that would work Just want to know the options.
Not that easy of course. Be careful looking in the junkyard at dually trucks. There are cab and chassis dually trucks, and then there are dually pickups. The cab and chassis pickups have a special narrow frame, with narrow leaf springs and a oddball narrow dually rear axle. This is so industry standard utility beds, dump beds, etc will fit. But these will not fit your pickup, your frame is wider.
You need a dually pickup rearend. It will be 4 inches wider than a single rear wheel pickup so when the dually rims are put on they do not hit the frame rail. I guess you have also seen the adapters you can buy to convert yours.
Then you need to convert the front. You did not say if you had 4x4 or not. If you have 4x4 you need to see if you have a dana 44hd ttb or a dana 50 ttb front axle. Ford made adapters that fit the dana 50 and the dana 60 straight front axles. And of course they make aftermarket adapters also.
Ok, so every truck that had factory duals has a narrower frame? Or did I just completely read that wrong? So even if I got the whole axle my frame would be too wide and it wouldn't fit? And if I were to do it right how would I?
Ok, that makes much more sense. So it is a pickup, so the axle would fit?
If you are sure it's a pickup, yes it will fit. Double check the type of rearend. If one of the rearends has a fill plug in the back cover, it is a dana rearend. If it doesn't have a fill plug in the back cover it is a Ford/Sterling rearend. If you are swapping different brands of rearends, double check the snoot on the rearends with a measuring tape, you may need a longer or short driveshaft if there is too much difference in the rearend pinion area depth.
If you are doing this conversion for looks, you had better swap the front also. Running regular rims on the front and dually rims on the rear is a dead giveaway to anyone you are trying to impress that it's a half-done conversion.
If you are sure it's a pickup, yes it will fit. Double check the type of rearend. If one of the rearends has a fill plug in the back cover, it is a dana rearend. If it doesn't have a fill plug in the back cover it is a Ford/Sterling rearend. If you are swapping different brands of rearends, double check the snoot on the rearends with a measuring tape, you may need a longer or short driveshaft if there is too much difference in the rearend pinion area depth.
If you are doing this conversion for looks, you had better swap the front also. Running regular rims on the front and dually rims on the rear is a dead giveaway to anyone you are trying to impress that it's a half-done conversion.
Ok, talked to my dad about it and told me that I could the duals off of our 87 f250 that my uncle put the dual kit on. Yes, it will be a dead giveaway but I will be content with it. Just want to fill some space with the wheels. Thanks for the information
Is there an adapter that would run the front dually wheel/rim. Also, would that help it under a tow load? Or, is it just cosmetic? I'm not trying to impress anyone with this ole beast. Would that serve a functional purpose? Advice is appreciated!
Last edited by J Scott; Apr 5, 2018 at 09:08 PM.
Reason: question mark
Is there an adapter that would run the front dually wheel/rim. Also, would that help it under a tow load? Or, is it just cosmetic? I'm not trying to impress anyone with this ole beast. Would that serve a functional purpose? Advice is appreciated!
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. Bought the truck with a flatbed and just don't like the fact that my tires are a foot or two in from the edge of the bed. It is an 84 f250, found a 90s (bricknose) f250 with duals in junkyard, was wondering if I would need to get the whole axle or if I could just get the wheels and bolt them on. But I doubt that would work 
Just want to know the options.
So even if I got the whole axle my frame would be too wide and it wouldn't fit? And if I were to do it right how would I?
