Like I said I’m looking at a couple used 6.7 PS with a manual transfer case. Just wondering what my options where to replace the open diff. I appreciate the feedback.

 

Detroit Truetrac
Detroit Locker
Yukon Grizzly Locker
Yukon Zip air locker
ARB air locker
OEM E locker

All fit the 10.5. I don't know of anyone running anything else aftermarket with good things to say. Also note, the diesels will have the Dana rear axle. I don't know if anything aftermarket is available for that, so you're stuck with what you get. The Dana has a drain plug on it's cover, and looks Dana-ish. Pretty easy to spot.

 

Only the duallys have the Dana axle the SRW trucks use the Ford 10.5.

 

Right on.
I have a pair of 150/4x4's. the '13 has an e-lock and the '05 has a TT. I had it put in when re-gearing a couple years ago. For 99% I'd take the TT, no question.

 

The new Detroit soft lockers are pretty quiet and they are hardly noticeable in a full size truck like they are in a short wheel base Jeep Wrangler.

 

I agree. The new Detroit's are tame.

The only downside I can see, is increased 4wd use in the winter to make them easy to drive. So that's why I usually only recommend an autolocker in 1 axle, not both. Doesn't matter which axle as far as I'm concerned. But one axle needs to be friendly in the slush and ice.

I used to think Detroit Rear, Truetrac or open front was king.
But now i'm convinced, E-locker rear, Detroit front is far better, and more well balanced.

 

If I could only have one Detroit locker It would be in the rear. I would put a Turetrac in the front or leave it open if it was driven on the street in the snow a lot. If it was used off road a lot then a Detroit front also. In my opinion a selectable locker doesn't make much sense in the rear of a street vehicle because it is either open or fully locked neither of which is ideal for street use, I would rather have a Truetrac in the rear than a selectable locker.

 

The E-Locker used in all newer Ford is simply a two wire solenoid. All of the fancy operation quoted from the Ford Service manual earlier in this thread is simply stating the strategy the BCM uses to control the ELD. I was a Ford Service engineer for 5 years and I am planning on doing a whole axle swap on my 97 F250 so I can have rear disc brakes and the ELD. All that is needed is a toggle switch.

 

You will also need different wheels or adapters because the bolt patterns are different the superduty is 8x170 and the OBS is 8x6.5.

 

On a truck. I only want pure open for the street. All one wheel peel issues are a set of tires, and driver skill solution.

My Mustang has an LSD, it makes more sense in that car. Even then, it's a bit of work to keep the LSD loose, but grippy. Too tight, and it's understeer city.

 

With an open rear end the traction control acts as a limited slip. The only downside is that it cuts engine power which sometimes you need to get moving.

 

No way, an open diff sucks in the rear of a truck, especially behind a diesel with a lot of torque.

 

After I put 34.5" Cooper STT's on my 2008, it never slipped a tire ever again, even with the open diff and empty bed. No problems what so ever. (Mid-Ohio)

 

I would get a factory e locker put in or swap a whole used axle might be more economical.
I am not a fan of LSD, they just don't do much especially on a heavy high torque vehicle, in my sports car sure I will take the LSD.

 

Of the listed diff's available (other than the factory type E Locker), I am a fan of the Truetrac. Used several in various applications.

The E Locker in my truck has worked very well in the recent snow and ice. I live on the Blue Ridge Mountain and have a pretty steep climb to get out of my driveway. I just turn the **** to 4Hi and creep up the hill without issue. No need for it once its up to speed.

For daily driving in rain/snow/ice I would prefer a Torsen or a pure clutch type instead of a locker. Seamless operation in varying conditions with few of the problems you see with lockers.

What type LSD is the factory unit (non E Locker)? I have never bothered to investigate.