Rear axle swap and Allison trans - Ford Powerstroke Diesel Forum
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Old 03-01-2012, 05:31 PM Rookie

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Rear axle swap and Allison trans

I recently just purchased a 2007 4x4 Crew cab lariat 6 liter. Now it's only a single rear wheel. I want to convert it over to dually but would rather swap out the axles than use those cheap adapters etc etc. I got a great deal on the truck from a friend and only paid 14k for it and fortunate for me I have a dually rear axle out of a 2000 7.3 shuttle bus.
So I guess my question is, can I use that axle and of so what will I need to convert it over. I'm told it's pretty much a matter of an adapter, my only oust concern is the gearing being different.

My second question is, a friend of mine blew up the motor in his duramax, bought a new crate motor and Allison transmission. I can get it off of him for very very cheap. It's a Allison 1000 trans. What would I need to convert that over as well and where can I source all these parts.

On another note, I know what everyone is thinking, why not sell it and buy a dually but I can source everything pretty cheap and I like my truck a lot and would like to take this route. With the powerstroke motor, new dually axle and Allison I believe the truck will be unstoppable.

Any help would be greatly appreciated.
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Old 03-05-2012, 03:24 AM
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A company named destroked make adapter plates for the trans swap, but you already have a 5r why change that out? What year/ model is the rear axle you have ? There is a dana 80 in the classifieds w/ 4.30's cheap, i'd buy it, but it's too small for my truck. But a great upgrade for a 350 thats gonna work hard. Putting a bigger dually axle in , is gonna be wider than a swr box, you will likely need to do some welding/fab work on the perch's and some driveshaft mods. Havent done stuff like that since i switched to F550's many years ago.
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Old 07-16-2012, 08:25 AM

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Where are you located cause I got an 06 dually lookin to convert to a swr. We just trade apxles and everything
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