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  #1  
Old 12-03-2013, 11:12 PM
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Default locker/posi questions

I have a 85 w150 its got a dana 44 front, and i 'm not really sure what out back but they both got 3.21 gears (or maybe it 3.23) anyways its all factory the truck is my daily driver and rarely sees offroad duty. sometimes though i like to drive it in the fields in the snow, almost got her good stuck today in a snowbank, and as i was rocking it back and forth (or trying too) once again i notice really only 2 dang tires are doing anything and it kinda peeves me.

Now Im not so sure I'd like a posi in the rear all of the time but it seems like maybe an air locker up front would be great for situations like this. what do you guys do? can you run a posi or air type locker in just one axle?

I should add i suppose that I do have good mud and snow tires not a street tire which loses traction easily in the snow

Last edited by beakerztoyz; 12-03-2013 at 11:15 PM.
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Old 12-05-2013, 11:13 AM
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Yeah, in stock form most of the trucks did not have locking differentials. Your rear I would gather is Chrysler 9.25. So the comments in this thread are applicable to you for consideration.

http://www.ramforumz.com/showthread.php?t=159762


To answer your question directly, yes a locker can be put in only 1 axle. Make sure you understand the selectable and non-selectable types.

Without knowing more other than seeing your general location is far more north, I'd ask what size tires are you running with those high ratio gears? Are you running 31s, 33s? Any larger with that ratio would certainly be hurting drivetrain parts.

Don't rule out a limited slip for the rear axle. They do way more in a fullsize that people give them credit for. Moreover, it's neccessary to put locker in rear first, not the front. It's a mistake to think "oh yeah just let the front pull itself" in fullsize.
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Old 12-05-2013, 09:30 PM
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There are differing schools of thought on lockers, some feel that its more important in the front since you will only use it when in 4wd anyway, whereas others like to be able to use their locker when in 2wd. Of course you can always do both.

From what I understand you should be able to put a locker OR LSD up front because you don't have 4 auto like the late model trucks have. I am not sure that they used the same Chrysler 9.25 axle back in '85, I thought they started using those in the '90s. Then again I was 8 years old in the last year of the '90s so I'm not sure.

If I were you I would start by putting your choice of locker or LSD in the rear and see if that is enough, then add one up front if its not. For your uses it sounds like you may not need one in the front though.

ETA: Wh1t3nukle is right about the LSD in the rear, and for your uses you may find it better due to its simplicity, and more than adequate for keeping you out of trouble. FWIW my truck has an open front and LSD rear, and like you I don't offroad too seriously. I'm confident in my drivetrain setup for any wheeling I'm going to do-I do need better tires though.
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Last edited by Thunderhorse; 12-05-2013 at 09:35 PM.
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Old 12-05-2013, 09:36 PM
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Thank's Wh1t3nuckle

Actually I only have little tires 235 75 15's which are about 29 inches in diameter i think I might someday upgrade to 31's but i think thats about as much as I'd wanna do. The reason I thought it might be better to have something in the front is that i have seen a lot of vehicles with limited slip diff's become very hard to handle in the rain, or sort of slippery conditions where i wouldn't nescesarily be in 4 wheel drive and i would rather just have a 2 wheel drive 4x4 than have a 3 wheel drive one thats a bear to handle in the rain. Wheras if it was in the front it would only be helping when i am on snow and ice during the winter. I appreciate your advice though because as i said b4 i really dont know much about this

And thanks thunderhorse I just saw your post

Last edited by beakerztoyz; 12-05-2013 at 09:40 PM.
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Old 12-05-2013, 10:26 PM
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I would put a full time locker on the front and a Eaton E-Lock in the rear,
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Old 12-06-2013, 10:43 AM
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I am a little new to this and have done a lot of research on the best combo for mud/snow traction.

The best thing I think is having a good LSD in the back (Detroit Truetrac is one that is talked about most). With an LSD (a good one), both tires keep moving and help keep momentum going. On top of that having an LSD in back is best for on-road use as well.

For the front, (if you find you want something in the front) either LSD or locker. For your use having a selectable locker is a must. I find everyone talks about either the e-locker or the arb air locker. I like the air locker much more myself. But if all you are doing is light mudding or snowing having LSD front and back is probably the best decision. good LSD's are about half the cost of good lockers.
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Old 12-07-2013, 02:04 PM
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the problem with LSDs is that when they start to slip in the snow they can cause very funny and unpredictable vehicle slip. You want a locker that you can turn on and off as needed when you want it to engage and disengage. I have been wheeling and building trail rigs since the early 80's. I haven't found a better combo for mud, snow, and DD than a full time locker in the front and a selectable locker in the rear.
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Old 12-07-2013, 05:16 PM
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Did the OP state they were using their rig as a trail rig? If he did or gave you that impression, then I'd tend to agree with you...to a point. Putting a fulltime locker up front is for a trail rig only. Meaning...not street use. I'm going to assume your meaning of "fulltime locker" = spool, which also means there is no option to disengage.

Otherwise your recommendations are recipe for broken parts for a street use rig. LSDs, whether helical or clutch type, are very predictable in the case of the rear. In snow, pickup beds should be loaded with some weight (200 lbs) to avoid unpredictable slippage. Very common practice.

Selectable is certainly ideal, yet the cost is minimum $1000 per locker, not including install labor and other needed parts (i.e., air system).

Make recommendations based on how they will use their vehicle.



beakerz -- do you slip and slide in the rain regularly? What is the tread depth on your tires? It's false to think that with 4wd that slipping goes away...


Quote:
Originally Posted by slimpartywagon View Post
the problem with LSDs is that when they start to slip in the snow they can cause very funny and unpredictable vehicle slip. You want a locker that you can turn on and off as needed when you want it to engage and disengage. I have been wheeling and building trail rigs since the early 80's. I haven't found a better combo for mud, snow, and DD than a full time locker in the front and a selectable locker in the rear.
Quote:
Originally Posted by slimpartywagon View Post
I would put a full time locker on the front and a Eaton E-Lock in the rear,
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Old 12-07-2013, 05:25 PM
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Full time locker in the front for a driver is about the worst advice I could think of.
Unless you want to fight every time you turn, break shit or kill someone

I would put some sort of locker, be it lunchbox or limited slip or selectable in the rear and leave the front alone.
Stock rig with slightly oversize tires has no business with a front locker IMO.
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Last edited by Swaggerville Ram; 12-07-2013 at 05:29 PM.
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Old 12-07-2013, 05:53 PM
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Full time locker in front is the worst thing you can do for mud and especially snow. How you going to turn? Remember he said this is his daily driver. If it was a weekend rockcrawler then a front full time locker would be obvious but it is the worst suggestion for his purposes.

Im telling you a GOOD LSD in the rear is what you want first. Then if you think you need more I would do another LSD upfront if you are doing mud/snow. If you want to take it more offroad then having a selectable locker up front is what you want.
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