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youngin
Dodge Dakota
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6/06/2003
19:54:47
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 Subject: Posi for my 3.9?
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I have a 99 Dakota 3.9. How can I get Posi so both tires spin. Who makes a posi system for my truck? How hard is it to install?
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whitedakota2
Dodge Dakota
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6/06/2003
20:13:38
| RE: Posi for my 3.9?
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The best price on one is a Dana Trac-Lok from 4 Wheel Parts.
http://www.4wheelparts.com/product2.asp?imseqn=234&occlass=DANA&cat=DRI
It is at the bottom of the page.
Pay a good mechanic to put it in for you as if it is not done right, it will fail very quickly.
The cost varies so call around. Good luck.
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youngin
Dodge Dakota
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6/06/2003
20:18:48
| RE: Posi for my 3.9?
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the 9.25?
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whitedakota2
Dodge Dakota
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6/07/2003
17:47:16
| RE: Posi for my 3.9?
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Most likely the 8.25, but have someone check for sure.
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youngin
Dodge Dakota
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6/08/2003
12:33:15
| RE: Posi for my 3.9?
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Who would know?
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mo-par
Dodge Dakota
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6/08/2003
12:38:39
|  RE: Posi for my 3.9?
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you gotta bend over and l@@k at your trucks azz end then compare it to these
http://www.richmondgear.com/01chrysler.html
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mo-par
Dodge Dakota
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6/08/2003
12:39:57
| RE: Posi for my 3.9?
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BTW if its a stock v6 it will be the 8.25
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mpil1
GenIII
6/08/2003
16:11:41
|  RE: Posi for my 3.9?
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A stock 6er has a Chrysler 8.25" rear. I've had a Dana Trac-Loc put in mine end of last year. Have had no probs with it. Keep in mind, a Trac Loc diff is not a Posi (GM term for locker??) unit, its a Limited Slip Differential. Your best traction will come from a locker; however many say a locker isn't very "streetable." I usually have no traction problems with my truck. I did notice better traction on pavement with it (roads with a little gravel, wet, or lots of small bumps). Prob was, I didn't have my truck long enough before I put it in to really notice a difference off road.
Mpil1
'02 SXT CC, 3.9L, 5-spd, 4x4, LSD, No Real Mods :(
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youngin
Dodge Dakota
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6/09/2003
09:53:17
| RE: Posi for my 3.9?
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and that lets you spin both tires?
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2003CC4X4
Dodge Dakota
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6/09/2003
12:47:40
| RE: Posi for my 3.9?
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No, the point of posi/trac-loc is not to spin the tires, if one starts to slip it transfers the power to the other tire. If you want to spin both tires(why?) then you want a locker. But a lockers locks both tires together, needing double the power to spin them. Also, remember that with both tires locked, cornering is not cool, since one tire turns faster than the other.
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DakotaJeff
Dodge Dakota
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6/09/2003
13:27:09
|  RE: Posi for my 3.9?
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In other words..someone is tired of doing one-legged burouts..and wants to spin both with a v-6 to impress his buddies...Yes..im in the same boat..tired of muh friends s-10 ss smokin 'em up
Jeff
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mpil1
GenIII
6/09/2003
17:14:48
|  RE: Posi for my 3.9?
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You won't spin both tires with the same amount of power. With Lim-Slip, once one wheel looses traction, it will "transfer" power back to the other wheel and turn it. However, it will not apply as much torque to one wheel as it does to the other; that is it won't transfer all the power back to the other wheel. So what you'll have is one wheel spinning away and one turning with slightly less power. If you wanna drop the hammer and see smoke from both your wheels, you might wanna look into a locker or something like a solid axle....but neither play very nice with the everyday driver on dry pavement!! Remember also, lim slip or lockers won't "create" more power. The engine will source so much torque to the driveline no matter what rear you have. That power will get divided evenly between each wheel, whether its all the power to one or splitting between the two. Put an LSD or locker behind a 6er and you'll proably have a hell of a time smokin big 'ol fat truck tires. Now an V8 or heavily modded 6er... :) For improved traction in everyday driving, Lim-Slip is probably best way to go.
Mpil1
'02 SXT CC, 3.9L, 5-spd, 4x4, LSD, No Real Mods :(
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youngin
Dodge Dakota
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6/09/2003
17:43:37
| RE: Posi for my 3.9?
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mpil1, don't I already have a LSD if only one tire spins? What will posi do for me then if i was to get it?
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mpil1
GenIII
6/09/2003
20:41:59
| RE: Posi for my 3.9?
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Message:
nope, if you're spinnin one tire then you have an open differential. Posi is a very GM kinda word. These guys around here tend to use the term Locker; its the same thing. But anyways, a locker will keep both rear wheels locked together at all times that you're applying power to them, that is, as long as you have your foot on the gas. (someone correct me if I'm wrong on that one!!!) If you go around a bend while putting power to wheels...they will still stay locked. If you take your foot off the gas, as I understand, the fact that there is no power to them anymore will allow the wheels to unlock and "differentiate," that is, spin at different speeds like is normal in turns / low traction. Do a search on this site to find more info on them, there are many many posts on the subject. They're what made me go Lim Slip instead of locker. Also, go to www.howstuffworks.com and look up differentials. There are a couple of good articles there that explain how differentials work ;)
Mpil1
'02 SXT CC, 3.9L, 5-spd, 4x4, LSD, No Real Mods :(
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Patrick
Dodge Dakota
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6/10/2003
00:16:04
| RE: Posi for my 3.9?
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I asked the dealership about LSD for my 1997 V6 5 speed and quoted me at $1200. Damn is that right
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Transvestite
Dodge Dakota
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6/10/2003
00:59:09
| RE: Posi for my 3.9?
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Message:
Posi Traction (GM), Sure Gip (Dodge), Traction Lok (Ford) are names of "Limited Slip Differentials". Limited slip differentials are not to be confused with "lockers". A locker physically locks axles to completely prevent slippage. An LSD only limits the slip, generally using a clutch mechanism.
Pat, shop around $1200.00 is wallet rape.
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mpil1
GenIII
6/10/2003
07:28:03
| RE: Posi for my 3.9?
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Got my Trac-Loc at a local 4x4 shop. $180 for parts :), $250 for labor :( But it sure as hell beat what the dealer quoted me....
Mpil1
'02 SXT CC, 3.9L, 5-spd, 4x4, LSD, No Real Mods :(
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Keith
Dodge Dakota
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6/10/2003
21:40:59
|  RE: Posi for my 3.9?
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Where is the best place online to pick up a SURE-GRIP for the 2002 3.9L? With the 8.25 and Open differential, it isn't fun on a hill spinning tires.
Thanks
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mpil1
GenIII
6/10/2003
22:41:03
| RE: Posi for my 3.9?
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Check out 4wheelparts.com.
They have the Dana Trak-Lok for Chysler 8.25" for $160.95. Also take a look at Auburn Positraction Units for Chrysler 8.25" for $384.95. I'm running the Dana Trak-Loc and have had no problems. But I've only been running it for about 5,000 miles or so. I don't know which will wear faster, but my guess is the Auburn is gonna be a little better. But I liked the price of the Trak-Loc and it does the job fine for th everyday driver.
Mpil1
'02 SXT CC, 3.9L, 5-spd, 4x4, LSD, No Real Mods :(
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Jay
Dodge Dakota
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6/11/2003
19:11:32
|  RE: Posi for my 3.9?
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And you expect to spin both tires with a 3.9? HaHa
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JoesDak
Dodge Dakota
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6/12/2003
03:14:22
| RE: Posi for my 3.9?
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Message:
I can spin both my tires w/out power braking it.As long as its wet out.Going in R it spins both tires on dry ground.But if i power brake it only one tire spinsEven when i let off the brake it still only spins one wheel.Anyone know why it would do this?99 CC 3.9L
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jas01dakon
Dodge Dakota
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6/12/2003
05:56:04
| RE: Posi for my 3.9?
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mpil1, do you know what part # we need for the Dana unit? Is it D/S84852 and are our trucks 29 spline axles?
Thanks.
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Lemmon714
Dodge Dakota
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6/12/2003
12:50:42
| RE: Posi for my 3.9?
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I ordered my 96 from the dealer with a 5-speed, limited slip, and 3.55 gear. The factory did not allow a 3.23 with limited slip. Truck has been spinning both tires for 90,000 miles. No clutch issues, no drivetrain issues, just plain fun.
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mpil1
GenIII
6/12/2003
20:25:09
| RE: Posi for my 3.9?
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Message:
I'm afraid I can't help that one. I took mine to 4x4 shop and said "I got a 2002 Dakota with Chrysler 8.25" axle," he said, "ok, heres the part, we'l order it and put it in." Looking at my invoice, it doesn't even have a Dana Part#. It just says Trac Loc for Chrysler 8.25" 3.55 gears. Thats all it says about it.
Mpil1
'02 SXT CC, 3.9L, 5-spd, 4x4, LSD, No Real Mods :(
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