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9" axle tag decode

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Old Jun 5, 2007 | 05:37 PM
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9" axle tag decode
WDM-CA is the code on the tag, can anyone tell me what ratio it is? It's in a 78 F150 but I cannot gurantee that it's the original axle so the door tag doesn't do me any good.
 
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Old Jun 5, 2007 | 07:05 PM
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The ratio is stamped right below those numbers you posted
 
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Old Jun 5, 2007 | 07:08 PM
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Below those numbers are 00 388E

If there's a number before the 00 then it's been rotten off the tag.
 
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Old Jun 5, 2007 | 07:14 PM
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It's a 3.

3.00:1

388 is the plant code


 
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Old Jun 5, 2007 | 07:42 PM
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Thanks. That does explain why the truck was such a pig off the line even with a 460 in it.
 
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Old Jun 5, 2007 | 09:05 PM
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If you trust junkyard axles, 90% or more of the time if you find a F100/150/bronco 4x4 it'll have 3.50 gears most of the time with a limited slip.
 
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