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Need help with rear differential decoding!

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Old Mar 16, 2003 | 07:16 PM
  #1  
Matts72's Avatar
Matts72
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From: Montana Territory
Need help with rear differential decoding!

I need help figuring out what gear ratio my rear differential is.

on the tag:
TDM CG 87A OR 4
75 9 360A OR 4


ON THE HOUSING / CARRIER
DW S OR 5 WC 2148
 
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Old Mar 16, 2003 | 10:15 PM
  #2  
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LxMan1
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From: Louisville,Ky.
Need help with rear differential decoding!

I bet if you look real close to the nut holding on, you will find a "2.". I'm pretty sure that you have a 2.75 open 9" rear end.
Jimmy
 
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Old Mar 17, 2003 | 12:00 AM
  #3  
Mil1ion's Avatar
Mil1ion
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Need help with rear differential decoding!

TDM ?

Are you sure it isn't WDM ?

I've never seen a TDM rear code before.

Here's a site.


http://www.ridgenet.net/~biesiade/Fordrears.html

It is a 2.75:1 9" rear gear though.
All the other stuff is explained on the page I linked to
 
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