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Old Apr 23, 2009 | 06:07 PM
  #1  
hydrosmith's Avatar
hydrosmith
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From: Lacey
new bronco

I have a '84 Bronco that seems to have had a 9" rear conversion done to it. Is there any numbers on it that would tell what this rear end originally came from and how to tell the ratio when the original I.D. tag is missing. I have been cautious not to engage the 4 wheel drive yet because I don't know for sure the ratio's match.

Any help identifing the tranny would be appretiated also. It has the C6 i'm assuming but the oil pan shape is unlike the older ones I know a bit better.

I've owned it just a couple months now and never have been around one before although I've always wanted one.
 
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Old Apr 23, 2009 | 06:46 PM
  #2  
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From: Bend,OR
the 9" was standard in that year bronco and could be found in some till 85/86. it would have a 3.50 gear ratio also so check the front D44 tag to see what it has.

I ran an 88 bronco with a 9 out back running 3.50 gears, the front still had the 3.54 gears and it worked fine. anything more then that difference would have issues.
 
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Old Apr 23, 2009 | 09:21 PM
  #3  
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From: Broken Arrow
get me the #s off your door post tag for the tranny, axle, and VIN and I can give you almost all the info you need.
 
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Old Apr 24, 2009 | 12:17 AM
  #4  
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The link to the axle chart by another FTE member is in the red link in my signature.
 
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Old Apr 24, 2009 | 06:01 PM
  #5  
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From: Lacey
The trans code is " K " and the axle code is " H6 ".
 
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Old Apr 24, 2009 | 08:19 PM
  #6  
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From: Broken Arrow
ok trans code K=C6. Axle code H6=Ford Limited Slip 3.50 Ratio (aka 9" limited slip)
If you get me your VIN code I can break that down for you as well
 
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