Needing diff tag decoded please

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Nov 23, 2019 | 11:48 AM

Millam

Thread Starter

Tuned

Joined: Oct 2014

Posts: 406

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From: Tucson Arizona

Needing diff tag decoded please

3.54 D8TA TB
603901 1

TIA!

Nov 23, 2019 | 11:59 AM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

Posts: 88,826

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From: Simi Valley, CA

Quote:

Originally Posted by Millam

3.54 Ford: D8TA TB // Dana: 603901-1

Dana 60 rear axle / 3.54-1 / 5,300 lbs. axle capacity. Original application: 1978 F250.

Nov 23, 2019 | 12:05 PM

Millam

Thread Starter

Tuned

Joined: Oct 2014

Posts: 406

Likes: 2

From: Tucson Arizona

Thanks ND!
I was really hoping this was a traction control diff.

Do the truck tags read similar to the car when it comes to traction control?
On my cars the ratio would have a letter in it. Like 3.L25 or 3.25L but it has been a long time and the old memory is funny sometimes.

Quote:

Originally Posted by NumberDummy

Dana 60 rear axle / 3.54-1 / 5,300 lbs. axle capacity. Original application: 1978 F250.

Nov 23, 2019 | 12:34 PM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

Posts: 88,826

Likes: 787

From: Simi Valley, CA

Quote:

Originally Posted by Millam

I was really hoping this was a traction control diff.

Do the truck tags read similar to the car when it comes to traction control? Some do...

On my cars the ratio would have a letter in it. Like 3L25 but it has been a long time and the old memory is funny sometimes.

Axle ID tag decodes to rear axle parts list #93 (pic: non locking aka no L/S).. If it decoded to rear axle parts list #94, then it would be a L/S rear axle.

Nov 23, 2019 | 01:23 PM

Millam

Thread Starter

Tuned

Joined: Oct 2014

Posts: 406

Likes: 2

From: Tucson Arizona

So this means that *no* decoding the tag isn't that easy without the parts books.
Too bad. But I've got to take my phone with me to check the tags.

Thanks yet again ND. You"re a wealth of information and a benefit to us all.

Quote:

Originally Posted by NumberDummy

Axle ID tag decodes to rear axle parts list #93 (pic: non locking aka no L/S).. If it decoded to rear axle parts list #94, then it would be a L/S rear axle.

Nov 23, 2019 | 02:41 PM

1TonBasecamp

Lead Driver

Joined: Jul 2017

Posts: 9,606

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From: San Jose, CA

Most of the truck tags still use the "L" in one position or another like you showed. Sounds like it's not a universal application, but it's still fairly common. At least it has been on the Early Broncos.

Paul

Nov 23, 2019 | 07:12 PM

RichS2659

Cargo Master

Joined: Feb 2006

Posts: 3,011

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From: North Pole, Alaska

Here is the easy way to do it using Dana's Bill Of Materials (BOM) number which is the basic Dana model number for the specific axle as delivered. The BOM for this axle is the 603901-1.
How to identify Dana axle BOM's:
https://www.therangerstation.com/how...a-spicer-axle/
Parts catalogs:
https://therangerstation.com/tech_li..._1967-1978.pdf
https://therangerstation.com/tech_li..._1978-1998.pdf