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LSD's front and rear...

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by ftn96, Jan 31, 2001.

  1. ftn96

    ftn96 1/2 ton status

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    LSD\'s front and rear...

    Anybody out here running Auburn Limited slips, well, any type of aggressive limited slip in the front and the rear? IF so, hows the hook up with these?

    Will work for parts, beer and sex.
    90 Jimi,350/700R4/241/10bolts/3.73's/33's/4"
    <A target="_blank" HREF=http://mccordhouse.freeservers.com>http://mccordhouse.freeservers.com</A>
     
  2. Panther

    Panther 1/2 ton status

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    Re: LSD\'s front and rear...

    I am getting a new diff in my rear axle and the garage suggested Auburn as the diff to get for a LSD.

    I don't mean to sound like a broken record or make you guys think I am selling them, but I have looked into the Powertrax No-slip diff. It is a soft locker that seems to have pretty good on-road mannerisms. Take a look at the No-slip thread I responded to (like 4 times [​IMG]). I am getting one of these in the next couple of weeks.

    <font color=blue>"It's just a differentialator....Totally unnecessary" [​IMG]</font color=blue>
     
  3. ftn96

    ftn96 1/2 ton status

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    Re: LSD\'s front and rear...

    I've looked into the No-slip as well. But it is my understanding that it is almost the same as the True-trac which has gotten some bad reviews for breaking. So I was kinda waiting to see what becomes of them. Not to mention they are a bit more expensive. Plus I just found out that Im about to be a dad, again. So the funds are about to be limited.

    Will work for parts, beer and sex.
    90 Jimi,350/700R4/241/10bolts/3.73's/33's/4"
    <A target="_blank" HREF=http://mccordhouse.freeservers.com>http://mccordhouse.freeservers.com</A>
     
  4. Burt4x4

    Burt4x4 3/4 ton status

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    Re: LSD\'s front and rear...

    I have had an Auburn before and it was a good unit, very tight but I also GRANADED it!!
    Now I am running Dana POWER-LOCK! Very tight posi!!
    I love it, I have one for my front Dana44 but it's not in yet.
    The best thing about the Power-Lock is that it is rebuildable.

    Two types of posi to consider
    1. The posi unit acts like an open diff until tracktion is lossed, then the posi should apply traction as needed.

    2. The posi unit acts like a locker but allows the wheels to spin or slip at different speeds, like when turning a corner.
    the Power-Lock is like a locker and takes allot of force or torque to make it slip.

    Hope this helps


    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
    <A target="_blank" HREF=http://www.burt4x4.coloradok5.com>http://www.burt4x4.coloradok5.com</A>
     
  5. flcpl4fn

    flcpl4fn 1/2 ton status

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    Re: LSD\'s front and rear...

    I have Auburn's in both the front and rear of my Jimmy. I haven't any problems with them not hooking up or breaking. And the steering is still good too. And I have them in my 10 bolt with 38 swampers.

    '85 Jimmy in Jax, Fl
     
  6. kpanza

    kpanza 1/2 ton status

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    Re: LSD\'s front and rear...

    I had an Auburn in the rear of mine. It never broke or anything, but for off road wheeling it SUCKED! Yes, it has great street manners, you would never know it was there, but in snow, mud, or in the rocks lifting a tire, it was horrible! It wasn't very tight in my opinion... so that is why I have a Detroit in the rear with an ARB up front now. If you plan on wheeling on any decent trails, go with a locker. The street manners are not that bad at all, and the awesome traction is well worth it. Also, I just spent two weekends in the snow, and the Detroit never "stepped out on me" on the snow covered highways. Anyway, just my opinion...
     
  7. ftn96

    ftn96 1/2 ton status

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    Re: LSD\'s front and rear...

    I love to see you guys talking about stuff sucking in the mud. I have nothing but nasty mud here around Nashville. And for the past 6 months I have had only open diff's with standard street tires, basically all stock and I've been the one pulling all the 4runners, jeeps and so forth with all the goods included. Granted I will go around most of the big holes and such, but for those open plains where there is just a big field of mud I haven'd had any problems yet. So with my going to Limited Slips and I can see my traction doing nothing but getting better. However, I am considering putting the LSD in the rear, thu having no complaints on the street where I do most of my driving and maybe putting a locker of some sort in the front. Thus the only time I'll have to deal with clunk, clank, over steer under steer and all the other stuff to do with lockers it will be off road. I know it'll hamper my steering a bit, but there are no painted lines in the woods just trees. LOL!!!!

    Will work for parts, beer and sex.
    90 Jimi,350/700R4/241/10bolts/3.73's/33's/4"
    <A target="_blank" HREF=http://mccordhouse.freeservers.com>http://mccordhouse.freeservers.com</A>
     
  8. Panther

    Panther 1/2 ton status

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    Re: LSD\'s front and rear...

    I haven't come across any problems with it in my poking around. Outta the people I talked to, one had 40,000 miles on it; one had 25,000; and the other said he had 6 tough wheelin trips with it.

    The reviews of it were much more favorable than than True-trac's model. Also, I actually just heard a trip report with a broken auburn with only 33s on it.

    I think the No-slip is at least competitive price-wise with the Auburn. I had a quoted price of 379 with shipping. It's my understanding Auburn are at least 300.

    By the way, congrats on the baby-on-the-way [​IMG]

    <font color=blue>"It's just a differentialator....Totally unnecessary" [​IMG]</font color=blue>
     
  9. ftn96

    ftn96 1/2 ton status

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    Re: LSD\'s front and rear...

    Thanks for the grats.

    Where did you get the quote for the $379???

    Cheapest I've found was $414.

    Will work for parts, beer and sex.
    90 Jimi,350/700R4/241/10bolts/3.73's/33's/4"
    <A target="_blank" HREF=http://mccordhouse.freeservers.com>http://mccordhouse.freeservers.com</A>
     
  10. K5Jimmy

    K5Jimmy 1/2 ton status

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    Re: LSD\'s front and rear...

    I run Auburn Pro at both ends of my 89...front 10B, 4:10's, 33 BFG Muds on 10" Rally's ( Bart Wheels w/ stock centers), Con-Ferr truss. ORD 4340 Axles....Rear 12B, 4:10's, same wheels and tires, Moser 1340H axles, w/ same truss...Texas Mud...I have yet to find a situation that will overcome the bias...don't have many rock opportunities around here, but I have run LBL in Western Ky and a few other deep rut trails...I also have several thousand miles of travelling to Nascar tracks, so I know they wear well and handle well on highway...I built my truck to be able to drive long distances, bark with the big dogs, (ok, sorta) and get me home fairly reliably...my Auburns really show their stuff on gravel washboard county roads...I run 14oz of LS additive in the rear and 7oz in the front....if I know I'm going into the harder stuff, I'll change the fluid in the rear to 7oz for a tighter bite...I've had an open front with a GovLock rear for years in my other truck, so I can tell you from experience that the front LSD makes a world of difference in most situations....since my truck spends most of it's time on the street as a daily driver, I felt the LS would be more forgiving (break fewer parts) than a locker especially in a C clip axle....just lettin' ya know what works for me....JD

    I'm at 10th and Plum....10 miles from nowhere, and Plum out in the sticks....Stuck?...Hell no..I still got some gas left..
     
  11. ftn96

    ftn96 1/2 ton status

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    Re: LSD\'s front and rear...

    Thanx for the post gents. K5jimmy really helped me the most.
    However, unless some one can tell me other wise here is what I have decided to do:
    Im gonna put the no-slip in the front adn the LSD in the rear. As this is driven more on the street than not, so the LSd will be great in the back, then when Im off-road, I'll have the sorta-locker in the front. Plus the locker will not be giving me all the symptom of the locker while doing my daily driving. LEss its snowing, but and with it being in the front, I would imagine that I wouldn't have to deal with the over-steer under-steer charateristics and plsu since the K5 has such a killer turning radius anyway, the no-slip shouldn't adversly hamper my driving abilities "that much".



    Will work for parts, beer and sex.
    90 Jimi,350/700R4/241/10bolts/3.73's/33's/4"
    <A target="_blank" HREF=http://mccordhouse.freeservers.com>http://mccordhouse.freeservers.com</A>
     
  12. Panther

    Panther 1/2 ton status

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    Re: LSD\'s front and rear...

    Talk to drivetraindirect.com. Fill out their form and they'll email you a free quote. Tell them your a member of ColoradoK5.com and they are supposed to give you 10 percent off (I assume they did, but I didn't get a line by line quote).

    Take that as a round figure though cause Powertrax has all the different models for the variations of the 10-bolt. I only told them I had a 10-bolt. So it could vary a bit, but I don't think it would be much.

    <font color=blue>"It's just a differentialator....Totally unnecessary" [​IMG]</font color=blue>
     
  13. 6.2Blazer

    6.2Blazer 1/2 ton status

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    Re: LSD\'s front and rear...

    I run a Tru-Trac in the rear and Eaton posi front. They are in my '90 with front and rear 10-bolts and 4.10 gears with 35x12.50 tires. At the time I installed them the truck was my daily driver so it needed good street manners and was only used off-road for some mud and snow.
    On the street, the Tru-Trac is even less noticable than the factory Gov-Lock was but works much, much better off-road. With one tire in snow and the other on dry pavement, you can still squeal the tire on the pavement. The truck is now strictly an weekend off-roader that runs fairly serious trails and I still think the Tru-Trac works pretty good, though some brake application is needed in extreme situations to get it to lock up. I also probably have around 20,000 street miles and about 2 years of heavy off-road use on it without any issues. The Tru-Trac is also the diff of choice to use in front axles (if you don't want a locker) in my club. There are numerous guys who have had them for years with no failures.
    The front Eaton also works very well. So well that it has delivered enough torque to snap two front axle u-joints. Both times they were on the side in which the tire was down in a rut with all the weight on it, in other words an open diff wouldn't have been sending any power to it but the Eaton was able to transfer that much torque. However, I don't think it works as good as the Tru-Trac simply because it doesn't respond nearly as well to brake application as the Tru-Trac, meaning I can almost always get the Tru-Trac to lock up but once you overcome the Eaton, that's usuallly it.
    I've wheeled with guys with similiarly equipped vehicles except they had a true rear locker and open front and I honestly think that my truck could outperform them in most situations. We don't have much in the way of rocks so it's mostly muddy and rutted hills.
    After all of that, I do plan on going to full lockers front and rear for the next round since the truck is strictly for off-road use now, but for something that has to be driven everyday I still like the limited slip option.
     
  14. Executioner

    Executioner 1/2 ton status

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    Re: LSD\'s front and rear...

    fyi, when the Auburn wears out, and it will wear out, they are not rebuildable. Throw them out and buy another one?
    Good luck
     
  15. HarryH3

    HarryH3 1 ton status Author

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    Re: LSD\'s front and rear...

    ftn96, I'll be interested to know how it handles on those icy Nashville streets you told us about a while back. I had an F-150 once that had the factory posi front and back. It went great in the snow. I'd like to hear some first hand experience of how a front locker behaves in snow and ice.

    <font color=black>HarryH3 - '75 K5</font color=black>
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  16. ftn96

    ftn96 1/2 ton status

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    Re: LSD\'s front and rear...

    Well, HAIR!!! I dont really know how much more snow and ice to expect. They say with this global warming the average temp is going to go up 10 degrees over the next century. Now, I know this is very much, but I think since the el-nino la nina crap is over, we should be getting some fairly consistant winter weather. But you will be first to know after I find out.
    But nothing "really" handles well on true ice. Less you get those old street tires out and turn'em into ice tires.

    Will work for beer, parts and tools.
    90 Jimi,350/700R4/241/10bolts/4.10's/33's/4"
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  17. ftn96

    ftn96 1/2 ton status

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    Re: LSD\'s front and rear...

    SO, since Im looking at putting my locker in the front and it wont be getting all those regular street miles should I
    A: Get the tru-trac or
    B: get the no slip?
    Im thinking tru-trac, due to the fact that it is cheaper. But on the other hand I like the reviews I've read about the no-slip. But all the reviews I've read are on freaking jeeps.

    Will work for beer, parts and tools.
    90 Jimi,350/700R4/241/10bolts/4.10's/33's/4"
    <A target="_blank" HREF=http://mccordhouse.freeservers.com>http://mccordhouse.freeservers.com</A>
     
  18. HarryH3

    HarryH3 1 ton status Author

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    Re: LSD\'s front and rear...

    The standard Truetrac isn't a true locker. It's a twist on limited slip in that it uses an array of worm gears to resist one axle turning faster than the other. With one wheel in the air, it will let that wheel spin. A little squeeze on the brake pedal will load the diff and cause it to transfer power to the wheel on the ground. There's a picture of it at <A target="_blank" HREF=http://www.tractech.com/tractech.htm>http://www.tractech.com/tractech.htm</A>. They don't have a description of how it operates, but I've heard that it's very front-axle friendly since it does allow smooth differentiation around corners. A buddy has one in the front of a CJ7 and is very happy with it.

    The new electric locking Truetrac gives you the ability to have just the limited slip or with the flip of a switch it will lock up solid, like an ARB. [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
     
  19. ftn96

    ftn96 1/2 ton status

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    Re: LSD\'s front and rear...

    Yuk, Electric you say... Im not electric friendly. But that does sound pretty cool. But there again Im not going to be using the front diff on the street all that often. But the True-trac is probaly were Im going as is the baby on the way and I still have all sorts of non-blazer related things to get done before hand, and it looks to be the cheapest option I have. But I guess I need to inspect my current front 10 bolt carrier and see what its condition is to see if it can handle it. IF not I may be in the search for a used one from one of you guys.

    Will work for beer, parts and tools.
    90 Jimi,350/700R4/241/10bolts/4.10's/33's/4"
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  20. 6.2Blazer

    6.2Blazer 1/2 ton status

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    Re: LSD\'s front and rear...

    I think the Tru-Trac would be very friendly in the front axle. As for running on snow and ice with front and rear LSD's, an aggressive front posi can make it interesting. Honestly with my Blazer, I prefer just running it in 2wd on icy streets with the front posi to avoid the understeer caused by it.
     

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