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Discussion Starter #1
I see from the recent post from the Ford Fleet site that the rear axle is a 9.75 Sterling which is great, I also see that you can't get a DRW with the 3.73 ratio in a limited slip unless you can get the ambulance package.
I will be ordering one this year and will have a Detroit Truetrac installed by the dealer I'm ordering from.
Kinda weird why they wouldn't offer the limited slip across the board.
 

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I see from the recent post from the Ford Fleet site that the rear axle is a 9.75 Sterling which is great, I also see that you can't get a DRW with the 3.73 ratio in a limited slip unless you can get the ambulance package.
I will be ordering one this year and will have a Detroit Truetrac installed by the dealer I'm ordering from.
Kinda weird why they wouldn't offer the limited slip across the board.
Do you know if the Sterling 9.75 is for all Transit vans 150,250 and 350 and also if an ARB air locker is available for this rear axle?
 

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From what was posted in the link to the Ford Fleet website, it would appear so....and it seems that ARB does have one for that axle.
Not what I want, but the guys I know that run them are very happy with them.

ARB AIR LOCKER FORD 9.75 INCH 34 SPLINE (RD150)
Thanks for the good information. Have had limited slip axles on my present and past trucks (dodge). Found they just do not work when you need them.
 

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Thanks for the good information. Have had limited slip axles on my present and past trucks (dodge). Found they just do not work when you need them.
I think thats the case with a number of LSD systems, aside from a lot of sports cars which I never hear complains about the LSD system
 

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what do you mean by they do not work?

When you have equally poor traction under both wheels, only one wheel spins.

When stuck on ice, snow or mud only one tire spins. When backing on to my snow or ice covered drive (small incline) only one wheel spins. On dry pavement burn outs both wheels spin.

In other words the limited slip differential on my dodge truck helps me get stuck and then quits working, when I am are stuck. I would prefer it to work the other way around like a "selective locking differential".
 

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Hmm interesting, I always thought LSD was good for off-road, I guess years ago it was but not now
 

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Discussion Starter #14
They are but they have limitations. A good example is you have a Detroit locker and you are on ice, off camber...not good. Being able to run and open/locked diff is great.
For the street, IMO, a Torsen or Truetrac is the way to go, for me, it's for snow.
 

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Was wondering the size of Rear-end of 250 high roof, 9" 9.75" ? Thanks
 

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T250 limited slip

When you have equally poor traction under both wheels, only one wheel spins.

When stuck on ice, snow or mud only one tire spins. When backing on to my snow or ice covered drive (small incline) only one wheel spins. On dry pavement burn outs both wheels spin.

In other words the limited slip differential on my dodge truck helps me get stuck and then quits working, when I am are stuck. I would prefer it to work the other way around like a "selective locking differential".
My 2015 T250 with optional limited slip 3.73 does work, easy to test backing up a steep gravel hill empty. Both wheels spin quickly and stay that way.
 
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