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10.25 which ones work

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Old Feb 10, 2021 | 08:34 PM
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10.25 which ones work

I have a line on a 97 10.25 with 4.10 gears and ls. I need to know if it will work on my 78 and can’t find any good info. He says it is not metric and spring perches should be the same as mine. Can anyone confirm or give me somewhere to look?

my d60 decided to eat a bearing in the pumpkin and chew up the ring gear.
 
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Old Feb 10, 2021 | 08:39 PM
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Unless I had an overdrive or I was drag racing you couldn't give me 4.10 gears.

In fact I have 4.10 gears and I just installed an overdrive.
 
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Old Feb 10, 2021 | 08:45 PM
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I love my 4.10 gears and have driven my truck in snow, mud, highway, etc. the 460/4spd/36” does great

my Dana 60 front is 4.10 so I have no intention of changing.

i just need to know if the axle will work without a headache.
 
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Old Feb 10, 2021 | 09:16 PM
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You didn't say it was a 4x4. yes 4.10's work they just suck.

If the spring perches don't work you can fix that. my concern would be width.
 
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Old Feb 10, 2021 | 09:28 PM
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Hey Brian, I think it will.
 
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Old Feb 10, 2021 | 10:45 PM
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I think since it is a 97 you are ok lug pattern wise. Now as far as the rest tape measure time.

Post #7 has some measurements. https://www.powerstrokenation.com/th...-issue.444817/

https://www.thedieselstop.com/thread...ooling.331418/

One guy did it, (PA74F250), one is doing it (78Extended) Time to ask them some questions.
https://www.ford-trucks.com/forums/1...ke-cables.html

 
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Old Feb 11, 2021 | 12:36 PM
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I'd wonder if the shocks will bolt up, if the yoke and U joint will work and the parking brake cables.
 
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Old Feb 11, 2021 | 12:52 PM
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The last link I posted talks about the parking brake cables.
 
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Old Feb 11, 2021 | 02:32 PM
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Brian, Check this thread, It was what I found when lookiing for mine. it has measurements on last page from Diesel Brad.
https://www.ford-trucks.com/forums/1...-f250-4x4.html
 
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Old Feb 13, 2021 | 01:49 PM
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You have to enlarge the hole in the factory block and in the spring plate. I used the new brake hose, and didn't hook up the parking brakes, so can't help there. It's really straight forward.
 
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Old Feb 25, 2021 | 11:08 PM
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So, as an update. I got the axle. 4.10, trac lock 10.25. Needs seals and brakes before I can install it, but it’s identical to the one I have under my bed/trailer so it will
work fine. Hopefully ill
have it in soon and can report fully.



 
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Old Feb 26, 2021 | 08:55 PM
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Good find I’d take a few more with 4.10’s. I’d do the swap again. Biggest thing is the driveshaft the rest is easy stuff.
 
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Old Mar 7, 2021 | 10:18 PM
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As some updates;

the yoke is identical to my d60, so driveshaft should be no issue

i should have ubolts and seals this week so I can get it under truck

here is a comparison of a Dana 60 axle shaft and a 10.25







 
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Old Mar 8, 2021 | 07:08 PM
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I thought the pinion itself of the 10.25 was longer that I couldn’t use stock driveshaft. I’m also using the springs from the later truck which I see supposedly keeps the axle forward I think 1.5”? I’m interested to see if you can use your stock shaft.

I didn’t have stock springs to use at the time and I have a flat bed so I’m interested to see what you come up with.

Did you get some 9/16 lug nuts for the rear?
 
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Old Mar 8, 2021 | 07:48 PM
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My truck was already 9/16” lugs so I’m good there. As for pinion, my truck has two piece driveshaft so that will help, find out for sure in a few days. I have super duty lift springs, rears are installed backwards and it kept d60 centered that way so should stay the same with 10.25
 
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