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pickup / bronco rear ends interchangeable ?

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Old Jul 12, 2004 | 05:50 PM
  #1  
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pickup / bronco rear ends interchangeable ?

My rearend is going out on my 81 bronco. I am having a hard time finding one at a salvage yard , Will a rearend from a half ton pickup work ?
 
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Old Jul 12, 2004 | 10:22 PM
  #2  
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Yep. Make sure you get the same ratio, it has to match what's in your front end or it will a disaster as soon as you put it into 4wd.
If you have a 9 inch rear end now, make sure you get a 9 inch replacement. Later trucks and Broncos have 8.8 inch rear ends. You could use an 8.8, but you have to change more stuff than you'd think to make one fit. Not worth the trouble at all. I'm not sure when the 8.8's started being used, but I've personally yet to see a factory 9 inch in any truck/Bronco later than 1986.
 
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Old Jul 13, 2004 | 09:47 AM
  #3  
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it does not matter if the gearing is different...i just did this to my bronc....put a 10.25 in the rear with 411 gears and the front is 373 i think.....no 4wheel problems at all....
 
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Old Jul 13, 2004 | 12:14 PM
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leiguy
Your gonna destroy your transfer case quick.
Ratios are to far apart.
 
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Old Jul 13, 2004 | 12:39 PM
  #5  
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I Agree! Get The Right Gears Or Get Tires On It That Will Make The Gearings Equal Out!
 
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Old Jul 16, 2004 | 09:40 PM
  #6  
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Reagan--any Ford 9" axle will work. They used them from the '60s until about '83.
 
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Old Jul 16, 2004 | 10:53 PM
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Driveshaft angle may be differant. Pickup is much longer that the bronco, thus the angle would be differant. May need to shim it to get the right angle, other than that would be the same.
 
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Old Jul 17, 2004 | 12:04 AM
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I swapped the rear out of a 94 half ton PU into my 90 Bronco. The 3.55 ratio was all I needed to worry about. My original got so noisy, I couldn't hear my radio. Ford is good about interchangability ( that's why they're so many of them. It keeps the cost down, compared to the competition).
 

Last edited by burtoby; Jul 17, 2004 at 12:06 AM.
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Old Jul 17, 2004 | 06:05 PM
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Originally Posted by bossind
Driveshaft angle may be differant. Pickup is much longer that the bronco, thus the angle would be differant. May need to shim it to get the right angle, other than that would be the same.
Yeap angle is different BUT Bronco use a special angled spacer between axel and leaf springs to provide right angle for each application, just switch both rear axels and be sure you install the spacer.
 
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