Ford Super Duty Axle Swap

Yes and no. The 05+ has 35 spline outer stubs but require a TON more work and will also be 8x170 bolt pattern. The 04 and down have 30 spline outer stubs, can built a lot faster and easier, and will be 8x6.5 bolt pattern. If someone wants me to build them a set I recommend going with the 04 down axles and installing be Dynatrac free spin kit. This does a few things.
1) Eliminates the unit bearing
2) Keeps the stock ABS tooth count so you can continue to use a ProCal if you want
3) Gives you a 35 spline outer


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Yeah the cast on the new ones are a bitch. Found a guy that sells them with them cut off for a great price. You have to change the outer stub for the dynatrac free spin kit? I didn’t know they made a kit. I knew Currie did.

Nvm Currie is unit bearing. Saw the dynatrac kit is 1800
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Yeah the cast on the new ones are a bitch. Found a guy that sells them with them cut off for a great price. You have to change the outer stub for the dynatrac free spin kit? I didn’t know they made a kit. I knew Currie did.

Nvm Currie is unit bearing. Saw the dynatrac kit is 1800
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Yep. So when someone wants me to build them, I basically charge them my cost on all the parts, plus labor. If a guy has to source all the parts at retail and then build it himself, then it becomes unrealistic a real quick. Of corse that’s just my opinion though.


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Yes and no. The 05+ has 35 spline outer stubs but require a TON more work and will also be 8x170 bolt pattern. The 04 and down have 30 spline outer stubs, can built a lot faster and easier, and will be 8x6.5 bolt pattern. If someone wants me to build them a set I recommend going with the 04 down axles and installing be Dynatrac free spin kit. This does a few things.
1) Eliminates the unit bearing
2) Keeps the stock ABS tooth count so you can continue to use a ProCal if you want
3) Gives you a 35 spline outer


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Ford went 8x170 in 99 when they introduced the super duty. Does the dynatrac kit convert it?

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Ford went 8x170 in 99 when they introduced the super duty. Does the dynatrac kit convert it?

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I haven’t looked at the specs on Dynatracs website for every iteration of this product, but the couple I did look at say the product is for stock wheels. I take that to mean 8x170mm, not 8x6.5”.
 
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