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Kevin
Dodge Dakota
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9/13/2003
15:49:19

Subject: RE: 3.55 vs. 3.92 gear ratios
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I have a 99 V6 5-speed with a Chrystler 8.2 axle, with an axle ratio of 3.21

I'm planning to convert to a limited slip and wanted to know what gear ratio I have, and whether I should go with a higher gear ratio..for off-line performance?

I don't understand whether gear ratio and axle ratio are the same?? If they are, mine is 3.21 which seems very low

TIA
Kevin



jdllizard
Dodge Dakota
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9/13/2003
16:29:57

RE: 3.55 vs. 3.92 gear ratios
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I have a 1999 5.2L Dak 4X4 with the 8.25 open dif 3:55 gears, I want to keep the gear ratio but convert to the Limited Slip Dif. Do you have to replace everything or what? What do I need to do to add the Limited Slip Differential to my existing rearend?



Kevin
Dodge Dakota
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9/13/2003
18:14:36

RE: 3.55 vs. 3.92 gear ratios
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JD....check out this link. There's some good info, plus near the end there is someone who actually got the work done.

http://www.dodgedakota.net/boards/gen/9249.html



jdllizard
Dodge Dakota
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9/14/2003
01:54:05

RE: 3.55 vs. 3.92 gear ratios
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Thanks for the link Kevin. Sounds like the Dana Trac-Loc is the way to go. I have a friend who can install it, shouldn't cost to much since I'm not changing gear ratios.



fastdak
Dodge Dakota
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9/14/2003
02:23:27

RE: 3.55 vs. 3.92 gear ratios
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How much time does the 3.55s kill off 1/4 vs. 3.92s. Gas mileage difference? I have a 3.55 open and its killing me traction wise. How much does that Dana Trac Loc run?



jdllizard
Dodge Dakota
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9/14/2003
13:22:18

RE: 3.55 vs. 3.92 gear ratios
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FasDak, I have been looking at Dana Trac-Lok also but cant seem to find a price for them, if you find a posted price let me know.



Kevin
Dodge Dakota
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9/14/2003
14:32:44

RE: 3.55 vs. 3.92 gear ratios
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"Getting Dana Trac-Loc installed today for $190 + installation. :)"

That's the quote from mpiL1 on the link I left earlier. I spoke with him and he said he simply went to a 4x4 shop and gave them the info...I assume the shop hooked him up with the part.



Carl N
Dodge Dakota
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9/07/2014
20:21:02

RE: 3.55 vs. 3.92 gear ratios
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How can I find out which gears I have? None of the
info I have from 2001 new purchase says it. All it
says is Axle- Anti-Spin Differential. I have the 4.7
V-8, 45RFE Trans.



jim
Dodge Dakota
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8/15/2016
16:05:29

RE: 3.55 vs. 3.87 gear ratios
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I have a 97 dodge 4x4 Dakota sport extcab.It has p265/65R18 tires on av8 3speed auto.What I need to know is what gear do I need in rearend to get better gas mileage



Road Rash
Dodge Dakota
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5/03/2023
10:09:14

RE: 3.55 vs. 3.92 gear ratios
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Have a 2004 Dakota 4x4 ext. cab, but someone put a
Dakota SUV rear end with 3.55 gears with no positrac
or limited slip - (I guess that's what you call
open), incompatible with the 3.92 of the front end,
and I'm wanting the positrac 3.92 carrier with ring &
pinion if it can fit the SUV case.
Also, will I need a shim set to adjust gear contact?



Road Rash
Dodge Dakota
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5/16/2023
14:25:19

RE: 3.55 vs. 3.92 gear ratios
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I put a used axle with 3.92 in.
Now it's a completely different truck! MUCH easier
on the 3.7L than the 3.55, and I can shut off the
overdrive for hills or passing. Cruises at 80 with
very little throttle now, and I think she'll pull
a load.



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