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Marty
Dodge Dakota
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3/05/2002
11:30:41
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 Subject: 3.55 to 3.92
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Do you think its worth it? Has anybody done this? If so can I expect .2 in the 1/4? If not how much?
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Dakaty
GenIII
3/05/2002
13:02:51
|  RE: 3.55 to 3.92
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I went from 355 to 410. Great improvement.
I thought about going to 392 but felt the change was not significant enough to justify the hassle. I have a QC and with its extra weight, I think the 410s are perfect.
So far I think I've lost only 1/2 MPG but I really do keep my foot in it!!
I haven't gone down the 1/4...yet.
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Jim
Dodge Dakota
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3/05/2002
16:57:19
| RE: 3.55 to 3.92
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Dakaty, can you just purchase 3.92's or 4.10's from any dodge dealership, or an offroad parts store? If you don't mind, about how much $$ do they run?
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Dakaty
GenIII
3/05/2002
17:40:34
| RE: 3.55 to 3.92
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I had mine installed at a good shop in Houston which uses "Motive Gears". Total cost was just over $450 parts, labor and all.
I had earlier got an estimate at the dealer for about $1100 (for 3.92s).
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kj
Dodge Dakota
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3/05/2002
20:43:30
| RE: 3.55 to 3.92
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A new ring and pinion for the 9.25 can be had for around $200 plus tax but the front 205mm or 8 inch or whatever it is can only be bought from Mopar from what I've heard and it's about $400 plus tax. This is for 2000 and later.
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handi2
GenIII
3/05/2002
21:47:02
| RE: 3.55 to 3.92
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Dakaty,
That was an excellent price for the gear change. I just replaced the gears in my 68 Mustang and it cost me $1,000.00
2002 Quad Cab SLT 4.7 Every Avaiable Option
Bed Rug/Access Tonneau Cover/2
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Dakaty
GenIII
3/06/2002
14:30:42
| RE: 3.55 to 3.92
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I got prices from four different places before I had mine gears changed. Cheapest was $375 (real greasy auto trans shop) to $1100 (Dodge Dealer). The other two bids were $450 and $550. I went with Houston Drive Train because Klc (posts on this Board) had his done there with good results.
I already had LSD
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Marty
Dodge Dakota
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3/06/2002
16:36:17
| RE: 3.55 to 3.92
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When you changed to 4.10's did you have to get a new speedo gear or re flash the computer?
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ole
GenIII
3/06/2002
17:40:23
| RE: 3.55 to 3.92
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Pardon me for this question, I think the answer
may be slightly obvious . . .
If I want to change to 4.10s on the rear, I will
also have to change to 4.10s on the front, right ?
$700 per axle minimum, ouch
2001, 4.7L, 5-Spd, 4x4
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TEAMFAST
Dodge Dakota
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3/06/2002
17:52:50
| RE: 3.55 to 3.92
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yes, otherwise the first time you throw it in 4x4
you will hear a delightful popping and grinding
sound. The sound of freshly squeezed teeth.
Its the same for tyres, always run 4 identical
sizes.
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Dakaty
GenIII
3/06/2002
20:08:01
| RE: 3.55 to 3.92
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On later model Daks (98 and up, I think) the speedo is not effected when the rear gears are changed. On earlier models the gear chage will effect the speedo.
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Horbedarn
*GenIII*
3/06/2002
23:30:00
| RE: 3.55 to 3.92
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Does anyone know if you can get 4.10 for the 205mm front axle yet.
Thanks
2000, CC, SLT, 4x4, 4.7, 3.55, Auto
MBRP Dual Exhaust Cat-Back, JBA Headers, 72mm TB, 4" Z-Tube
3923's, 180 T-Stat, IAT Adjuster
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Dakaty
GenIII
3/07/2002
11:22:10
| RE: 3.55 to 3.92
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Hor
I don't know about the front gears (I'm a 2 WD).
Check with Randys Ring and Pinion
http://ring-pinion.com
or
1.800.292.1031
They seem knowledgable
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440boat
Dodge Dakota
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2/14/2005
23:10:35
|  RE: 3.55 to 3.92
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Got my 4.10's at ACCU Automotive,went with Motive although they have several other brands. 512.00 for front and rear for my 94 4x4 slt clubcab 5.2. That included the master rebuild kits. Got a local guy to install them for 400.00. Best mod I have done.
Home brewed cold air,flowmaster 40, no cat,mopar performance computor,harland sharp 1.7 roller rockers,fastman 50mm throttle body.
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RaZoR1
Dodge Dakota
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2/16/2005
17:43:32
| RE: 3.55 to 3.92
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Is that really true that you do not have to flash your computer to swap gears??? I have the 3.55's but would love the 3.92's. Problem is is that i have the kenne bell blower and they have flashed my computer already. Not able to have it flashed again, would delete kenne's flash. If this is true is it because of the speed sensor?? Is that where the computer gets it's speedo info from??? (2000, auto 4.7)
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FLDak
Dodge Dakota
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2/17/2005
08:18:52
| RE: 3.55 to 3.92
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Razor, that is correct. I had my 3.55s changed out with 4.10s and LSD and speedo was right on. I verified it with my GPS. My Dak is an 02 with a 4.7L. If you are considering a gear change don't stop short with 3.92s go ahead and get 4.10s, you'll love them.
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RaZoR1
Dodge Dakota
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2/17/2005
17:42:48
| RE: 3.55 to 3.92
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4.10's.... hmmm. I really don't do a lot of highway. I'm looking for better track jperformance but until i can get a shift kit to stop my tranny from burning up on my 2-3rd shift i won't be going back. What type of revs are we looking at at around 100km(60-65mph)? I have the 2000 4.7 auto with OD.
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TexasTodd
Dodge Dakota
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2/17/2005
17:52:41
|  RE: 3.55 to 3.92
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I think the 4.10 argument holds up, IF you have an auto!
For the nv3500, even with the 3.55's, it seems about the same, if not shorter 1st, than a 4speed auto with 3.92's.
NOw, if someone that isn't lazy like me, they could multiply and get the ratios, I know it's been done and posted.
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FLDak
Dodge Dakota
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2/18/2005
08:39:52
| RE: 3.55 to 3.92
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Razor;
At 70mph I'm turning 2500rpm.
At 85mph I'm turning 3000rpm.
I think that's right.
Hope this helps ya...
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AndrewM
Dodge Dakota
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2/18/2005
10:31:27
| RE: 3.55 to 3.92
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I second the 4.10 suggestion. Went from 3.55 open to 4.10 LSD on my 02 4.7 auto. Highly recommend it.
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FLDak
Dodge Dakota
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2/18/2005
12:35:43
| RE: 3.55 to 3.92
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Razor;
I found my original post when I had the gears installed, hope this helps ya:
http://www.dodgedakota.net/boards/per/7666.html
Later...
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