New axle information
Fleet Mechanic
Joined: Apr 2015
Posts: 1,641
Likes: 507
From: Phelan CA
Undoubtedly Dana Spicer. Probably the M275 housing with a larger ring gear.
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Cargo Master
Joined: Nov 2020
Posts: 2,073
Likes: 1,027
From: Michigan
There is nothing on the Dana site for an M290 which is the metric number for an 11.6" gear. I also looked for a larger sterling and came up blank as well.
The M275 held the 7.3 just fine but seem to have issues with the 6.7. I wonder if that is the reason. AAM builds 11.5+ for the Ram to hold 1000+ lb/ft of torque.....Ford seems to be following suit.
The M275 held the 7.3 just fine but seem to have issues with the 6.7. I wonder if that is the reason. AAM builds 11.5+ for the Ram to hold 1000+ lb/ft of torque.....Ford seems to be following suit.
Hotshot
Joined: Jun 2003
Posts: 12,343
Likes: 4,368
From: SW VA
There is nothing on the Dana site for an M290 which is the metric number for an 11.6" gear. I also looked for a larger sterling and came up blank as well.
The M275 held the 7.3 just fine but seem to have issues with the 6.7. I wonder if that is the reason. AAM builds 11.5+ for the Ram to hold 1000+ lb/ft of torque.....Ford seems to be following suit.
The M275 held the 7.3 just fine but seem to have issues with the 6.7. I wonder if that is the reason. AAM builds 11.5+ for the Ram to hold 1000+ lb/ft of torque.....Ford seems to be following suit.
What issues did the M275 have with the 6.7L? And you can't count the defect of collapsing tubes at the spring perches...That was obviously a manufacturing/design flaw that only affected a small production run.
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Cargo Master
Joined: Nov 2020
Posts: 2,073
Likes: 1,027
From: Michigan
Think its typo then?
Lead Driver
Joined: May 2021
Posts: 5,848
Likes: 3,471
From: Uh oh, CA
With as many typos that Ford has, I wouldn’t be surprised. But, I know the M275 in the 22’s was derated already, at least the ones in the 250’s are considering the 350’s had the same axle but higher limits. Of course though, they did have that bad run of Dana’s that drew a lot of attention… so I could also see this as an actual change… now they can say they have an all new axle design…
It’s also interesting that they seem to be blurring the lines even more with the 250 vs 350. In the right configuration they were already the exact same, but with a paper derate on the 250.
If it’s true, I’m curious to see what this new axle is all about too though!
It’s also interesting that they seem to be blurring the lines even more with the 250 vs 350. In the right configuration they were already the exact same, but with a paper derate on the 250.
If it’s true, I’m curious to see what this new axle is all about too though!
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Cargo Master
Joined: Nov 2020
Posts: 2,073
Likes: 1,027
From: Michigan
With as many typos that Ford has, I wouldn’t be surprised. But, I know the M275 in the 22’s was derated already, at least the ones in the 250’s are considering the 350’s had the same axle but higher limits. Of course though, they did have that bad run of Dana’s that drew a lot of attention… so I could also see this as an actual change… now they can say they have an all new axle design…
It’s also interesting that they seem to be blurring the lines even more with the 250 vs 350. In the right configuration they were already the exact same, but with a paper derate on the 250.
If it’s true, I’m curious to see what this new axle is all about too though!
It’s also interesting that they seem to be blurring the lines even more with the 250 vs 350. In the right configuration they were already the exact same, but with a paper derate on the 250.
If it’s true, I’m curious to see what this new axle is all about too though!
True on the typos.... With Ford getting rid of their brochure and media folks its hard to get anything from their crappy website. No towing data, no gcvw data, nothing other then "hay were great, buy one"....
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Logistics Pro
Joined: May 2022
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From: Everywhere and nowhere
I dont understand why the Dana 80 went away. There was an article in the early 2000s comparing the AAM 11.5" to the Dana 80. Basically the Dana 80 was rated for 18,000lbs by Dana and Ford derated it when they put it in their trucks. The AAM 11.5" was a good rear also but the consensus of the article was they they are extremely similar in every way as far as what they can handle.
Temporarily Deactivated
Joined: Sep 2004
Posts: 279
Likes: 125
Glad I have an overbuilt AAM 11.5 in my pickup. Good to know there is plenty of reserve. It’s all about the rear when towing. The front should allow independent articulation for a better on road experience.
best of both worlds………..
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best of both worlds………..
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Cargo Master
Joined: Jan 2017
Posts: 2,250
Likes: 563
you can screenshot the videos that have been put out so far. ive not seen any new rear housing. looks to be just new ring gear in the current housing
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Cargo Master
Joined: Nov 2020
Posts: 2,073
Likes: 1,027
From: Michigan
Kinda makes you wonder if Dana will ever make a trutrac setup for it if its fills the inside with more gears. I would still think they would have to rename it since their others are based on ring size.
