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99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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Old 04-26-2009, 02:40 AM   #1 (permalink)
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D50 or D60

How can you tell the difference between dana 50 and 60? I have 2002 F250.
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Old 04-26-2009, 11:40 AM   #2 (permalink)
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How can you tell the difference between dana 50 and 60? I have 2002 F250.
As far as I know F250 front diffs are D50s.

To confirm, crawl underneath your truck and look for either a 50 or a 60 that should be cast on the front differential housing.
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Old 04-26-2009, 11:41 AM   #3 (permalink)
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I think the early '99s were 50s and the late '99-'03 were 60s? No?
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Old 04-26-2009, 11:49 AM   #4 (permalink)
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I think the early '99s were 50s and the late '99-'03 were 60s? No?
You could be right, that's why I said, "As far as I know ..." I could just have easily said, "Based on what little I know."

A while back I read that they were 50s and crawled under my truck to check. There was a 50 cast into the pumpkin so that's what I figured that I had (I read about the number being cast onto the pumpkin).

If this is wrong, then I'd gladly stand corrected!
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Old 04-26-2009, 12:33 PM   #5 (permalink)
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'99 thru 2001 SuperDuty SRW 4x4s had a Dana 50 front axle. Early 2002 SuperDuty SRW 4x4s also had a Dana 50 front axle. Ford made a running change during the 2002 model year when they switched to Dana 60 front axle for SuperDuty SRW 4x4s.

F-350 DRW 4x4s PSDs had a Dana 60 front axle since the early '99s were introduced in early CY 1998.
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Old 04-26-2009, 01:26 PM   #6 (permalink)
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Originally Posted by SmokeyWren View Post
'99 thru 2001 SuperDuty SRW 4x4s had a Dana 50 front axle. Early 2002 SuperDuty SRW 4x4s also had a Dana 50 front axle. Ford made a running change during the 2002 model year when they switched to Dana 60 front axle for SuperDuty SRW 4x4s.

F-350 DRW 4x4s PSDs had a Dana 60 front axle since the early '99s were introduced in early CY 1998.
Thanks for the lesson. It's always good to learn a bit more about these trucks.

So TxSD might have a D60 front axle depending on the year of his truck .....

What year is your truck, TxSD?
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Old 04-27-2009, 10:44 AM   #7 (permalink)
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D50 or D60

My truck is an 01-2002. I didn't see the D50 or the D60 on the housing, shouldn't be on the left if your looking at the cover? If not a bracket is covering the right side. Any body got pics of where it is suppose to be?
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Old 04-27-2009, 10:55 AM   #8 (permalink)
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My truck is an 01-2002. I didn't see the D50 or the D60 on the housing, shouldn't be on the left if your looking at the cover? If not a bracket is covering the right side. Any body got pics of where it is suppose to be?
I will see if I can get a decent pic after work this evening.

The number should be on the back side of the front diff. It is on the cast part of the diff, not on the cover.

Mine was on the back of the diff on the drivers side, IIRC.
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Old 04-29-2009, 08:25 PM   #9 (permalink)
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Front diff identification

Crawled under truck and looked for D50 or D60 on housing no luck. I also read that D50's code is 228 and that D60 is 248 that is listed in ford service manual. Mine is a D60 code 248 that is actually stamped(248) on the housing not d60. There is also a sticker on Axel tubing showing code, gear ratio, date (mine is 01-02-2002), and some other numbers.
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Old 04-29-2009, 11:13 PM   #10 (permalink)
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Here's the sticker on my original D50 axle.


The sticker from my Dana 60 (from an 04 truck) has D282-B place of the D-268-B above. And in the lower right, it has A 248 in place of the DD 229.

The sure way to tell is to measure from the back of the casting where the axle tube plug weld is back perpendicular (straight front to rear) to the center of the u-joint. If it's 11 inches, it's a D60. Not sure of the same measurement on a D50, but it's about 10 inches, as I had to get my driveshaft shortened when I did the swap.
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Old 04-30-2009, 12:07 PM   #11 (permalink)
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D60

My sticker was like your 2004 a dd248. The 248 is actually stamped on the top right side(passenger) on the back side of housing itself.
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