Another Axle ID

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May 12, 2011 | 02:14 PM

cigarxtc

Thread Starter

Postmaster

Joined: Apr 2000

Posts: 2,881

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From: North of Tulsa, Oklahoma

Another Axle ID

Hello All, I need to replace the leaking seals on my rear axle. I'm not sure which one i have. A forum and google search did not help. This is for my '78 F150. The gears would come out through the front of the pumpkin not the rear. There's 10 bolts on the outer cover and 5 bolts on the small front cover that goes to the drive shaft.

Here's the tag code:

WDM 8J 7AC
2 75 9 378A

I would guess that the "378" is for 3.78 gears? The rest i have no clue about.

Thanks in advance.

May 12, 2011 | 02:20 PM

montana_highboy

Post Fiend

Joined: Apr 2008

Posts: 8,261

Likes: 15

From: Big Sky Country

Ford 9 inch w/2.75's

May 12, 2011 | 02:26 PM

HIO Silver

Fleet Owner

Joined: Dec 2009

Posts: 20,678

Likes: 83

From: NorCal

Here's a good page for background on the Ford 9-Inch: Kevinstang's Ford Nine Inch Differential Page +

Tidbit... even when a Chebby, Yota, or Dodge wins a race in NASCAR, Ford also wins because all of 'em use a Ford 9-inch axle. IMO, they're darn near bomb-proof when built to withstand the abuse.

I'm sure a D60 fan will chime in and start flaming...... wait for it......