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silva8
Dodge Dakota
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5/03/2005
19:01:58
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 Subject: larger tires and OD?
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I was told two different things and I figure who better to ask than all you. I have 33x12.5x15 bfg and since I put them on the truck keeps shifting in and out of overdrive. I was told to fix this problem to change gears or to get the computer reprogramed. I just wanted to know the best way to correct this. If you need my info I have a 99 dakota 4x4 3.9 automatic everything is stock except 3inch lift and new rims and tires. thanks in advance
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JJ
Dodge Dakota
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5/03/2005
19:37:51
|  RE: larger tires and OD?
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Just curios...3" body lift or suspension?
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silva8
Dodge Dakota
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5/03/2005
19:43:52
| RE: larger tires and OD?
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Its a pa body lift
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Dan
Dodge Dakota
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5/03/2005
22:56:27
| RE: larger tires and OD?
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Being that you are pushing those tires with the 3.9 (not insulting the engine), I would go with the gears. It will give you the extra power I am sure you'd like.
Dan
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Justin
Dodge Dakota
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5/03/2005
22:58:50
| RE: larger tires and OD?
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what gears do u suggest for the 3.9? and how much am i looking at spending? will it help the top end speed?
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Dan
Dodge Dakota
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5/03/2005
23:10:36
| RE: larger tires and OD?
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I am assuming it is a 4x4, so of course you will need 2 sets, front and rear differential. You will be installing a lower gear ratio, so it will lower your top speed, but accelleration will be benefit greatly. I have no idea how much they will cost you, you will have to look around and price them. I have seen that a very popular size is to go with 4.10 gears. You probably have either 3.55 or 3.92 gears in it now. I saw on truckperformance.com that they are going for $200-260, of course plus installation unless you can do it yourself. I just looked at one place, there might be cheaper.
Dan
Dan
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Dewey
Dodge Dakota
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5/04/2005
06:33:32
| RE: larger tires and OD?
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Go with the 410 I did and the shifting problem stopped on my truck I would have went 456 though because I have heavy QC V8.
Heres my rig. http://www.PictureTrail.com/ gid7276791
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texasboy77904
Dodge Dakota
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5/04/2005
06:48:14
| RE: larger tires and OD?
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dewey whered u get your 4.10s at? and how much?
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silva8
Dodge Dakota
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5/04/2005
21:22:12
| RE: larger tires and OD?
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thanks for all of your help. I guess its time to start looking for new gears because I drive alot on the hiway and the shifting is driving me crazy
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Dan
Dodge Dakota
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5/04/2005
23:51:53
| RE: larger tires and OD?
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make sure to post where you get your gears and how much you paid. I am sure there are a lot of people who would like to know their options.
Dan
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Dewey
Dodge Dakota
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5/05/2005
18:47:36
| RE: larger tires and OD?
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Texasboy, I went to a gear specialist for that work and it cost about 1500.00 for front & back. Some of that cost was because I put in a limited slip also. ask around at your nearest 4X4 shop, they should know who does gears in your area. Have fun guy!
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Dan
Dodge Dakota
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5/06/2005
03:29:52
| RE: larger tires and OD?
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That is a good point. That will be the time to put locker/limited slip in your truck...
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Hoss 01
Dodge Dakota
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5/06/2005
13:30:59
| RE: larger tires and OD?
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I have read several posts about people using Superlifts tru-speed recalibration for bigger tires. I have only heard positive experiences. It adjusts your speedo, shift points, and everything affected by bigger tires. You will still have a little loss of power, but atleast your tranny will know what is going on.
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texasboy77904
Dodge Dakota
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5/06/2005
14:25:52
| RE: larger tires and OD?
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doesnt the superchips tuner also adjust the shift points for trucks with bigger tires?
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