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EB 9" Info

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Old Oct 1, 2004 | 06:18 AM
  #1  
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JeremyH
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EB 9" Info

Hello, I dont post much in this section (mostly in the offroad forum) but I have a few questions about an EB 9" that I have found (I have searched). It is on a '71 chassis with a 302 (I believe), Dana 20 and what looks to be a 30 up front (I see no ball joints).
So here is some info I have obtained from the 9:

it is about 59" WMS-WMS, the drum measures about 11.25" in diameter and I found the following numbers stamped near the pinion:
C5AW 4668A

Now according to this website:
http://www.gearheadracing.com/Refere...FordDiffer.htm
it has fairly stout pinion bearings, but doesnt give much more info.

This is what was on the diff tag:

EM-E1
507HC605

Can anyone give me any info on this axle?

Thanks,

Jeremy
 
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Old Oct 1, 2004 | 05:38 PM
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anyone?
 
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Old Oct 2, 2004 | 05:51 PM
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The numbers you give from the tag don't seem to go anywhere in my cross reference list What I can tell you is that it is a big bearing housing, judging by 11" brakes.
Factory gearing with a V8 was 3.50 standard or 4.11 optional. I can't tell you whether it should have limited slip or not.

Pretty standard housing although not as desirable and stout as the 77 triangulated housing.

Jason
 
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Old Oct 2, 2004 | 09:53 PM
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Where are you plugging in numbers? A website?

I might just need to pull the shafts and count the splines....

Thanks for the info BTW.
 
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Old Oct 2, 2004 | 10:10 PM
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RCrawler
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I have a list compiled of the common EB axle codes and #'s. And I double checked a few places on the internet.

BTW, I should have added that all Broncos originally came with 28 spline axles. But upgrading to 31 or 35 spline axles is common. Its a good idea to pull an axle and count the splines.

Your welcome
Jason
 
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Old Oct 2, 2004 | 10:22 PM
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Hummm.....so thicker shafts, thinnner bearings?
 
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Old Oct 3, 2004 | 01:48 PM
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The 28 spline shafts neck down to the splines. The 31's stay the same diameter. The bearings are the same size. I believe this is true with the 35 spline shafts as well. The weakness in a 28 is where the diameter is reduced and at the smaller splines (from torque)

Jason
 
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Old Oct 3, 2004 | 04:36 PM
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Originally Posted by RCrawler
The 28 spline shafts neck down to the splines. The 31's stay the same diameter. The bearings are the same size. I believe this is true with the 35 spline shafts as well. The weakness in a 28 is where the diameter is reduced and at the smaller splines (from torque)

Jason
Thanks! I'll look for the reduction when I pull it apart to check everything out.
 
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