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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

9” Rearend Tag Deciphere

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Old Apr 8, 2020 | 07:26 PM
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9” Rearend Tag Deciphere

Only thing I’ve concluded is it’s a 350 gear ratio. Anyone care to tell what the other stamping mean.
 
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Old Apr 8, 2020 | 07:32 PM
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Originally Posted by Branded
Only thing I’ve concluded is it’s a 350 gear ratio. Anyone care to tell what the other stamping mean.
WDM-J = Ford 9" Rear Axle / 3.50-1 / No Limited Slip.

6JD = Assembled the 4th week (D) of September (J), 1966 (6).

311 = Assembly Plant code.
 
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Old Apr 8, 2020 | 07:34 PM
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Thanks Bill, I knew you’d come thru again.

Dave
 
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Old Apr 8, 2020 | 07:39 PM
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This will help me with looking for the correct axle bearing and inner seal.
 
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Old Apr 8, 2020 | 08:52 PM
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Originally Posted by NumberDummy
WDM-J = Ford 9" Rear Axle / 3.50-1 / No Limited Slip.

6JD = Assembled the 4th week (D) of September (J), 1966 (6).

311 = Assembly Plant code.


You wouldn’t have the axle bearing and seal number would you.
 
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Old Apr 8, 2020 | 10:18 PM
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Originally Posted by Branded
You wouldn’t have the axle bearing and seal number would you.
Large 9" ball type axle bearing: 1961/73, some 1974/79 (some had the tapered roller axle bearing & seal combination), 1980/86.

Ford updated the bearing and seal part numbers a gazillion times.

There's also a slew of BIN's (Bearing Industry Numbers - #'s stamped on the bearings) due to the fact that Ford updated the part number numerous times.
 
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Old Apr 8, 2020 | 10:38 PM
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I see, I’ll check with some local parts houses and see what they come up with.

thanks again for all your help.
 
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