How do I tell what gears I have?

tiger9297 · Oct 20, 2011

I have an '07 Dodge 2500 4x4 w/ the 6.7 and auto trans. How do I tell what gears I have in the rear end?

Thanks.

wermbang · Oct 20, 2011

get a build sheet from Dodge. also are the stamped on the axels or something like that??

bigbadram1500 · Oct 20, 2011

I thought they were on the door sticker, but I just checked mine and didn't see anything resembling the ratio.

reefguy89 · Oct 20, 2011

there are a few ways easiest is to look behind the glovebox for a tag that will have it listed. Also you can use the Vin # to get a build sheet and check that way. And the othre way is to jack up the rear and spin the tires or something like that and count the revolutions. Someone will be able the help with the last one better. I would say you probly have either 3.92's or 4.10's

reefguy89 · Oct 20, 2011

i thinks theres a way also by the tire size in comparision to the rpm at 70mph.

bigbadram1500 · Oct 20, 2011

reefguy89 said:
there are a few ways easiest is to look behind the glovebox for a tag that will have it listed. Also you can use the Vin # to get a build sheet and check that way. And the othre way is to jack up the rear and spin the tires or something like that and count the revolutions. Someone will be able the help with the last one better. I would say you probly have either 3.92's or 4.10's

oh yeah the glovebox too. I had heard about that but wasn't for sure where exactly to look.

The Assassin · Oct 21, 2011

Never knew about the glove box. Could also probably call the dealer and give them your vin number.

quietpeen · Oct 21, 2011

i've never seen anywhere in the glove box or behind that had the gear ratio on my 3rd gen. It is possibly on a sticker on the axle, but that doesn't last long in rain and stuff. The easiest way will be to request a build sheet.

KGBIGCOUNTRY · Oct 21, 2011

Build sheet or count the amount of turns. There is a way to do it but I cant for the life of me remember it at the moment.

HemiBabe · Oct 21, 2011

Mine has a sticker inside the glove box with all the build specs. There is also a way to tell by jacking up the rear end, and counting the times the tire rotates per spin or something like that.

TheSatinPumpkin · Oct 21, 2011

Request your build sheet. Members who have used it advised a 24-48 hour turn around but sometimes quicker.
Contact Dodge

quietpeen · Oct 21, 2011

BigHorn 4 Life said:
Al I did was looked on the front of the front diff. there is a sticker there that will say either 3.92 or 4.10

lol...that's easy on a new truck.......his is basically a 4 year old truck......i doubt that sticker is still legible if its even still on there.

How do I tell what gears I have?

tiger9297

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wermbang

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bigbadram1500

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reefguy89

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reefguy89

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bigbadram1500

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The Assassin

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quietpeen

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KGBIGCOUNTRY

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HemiBabe

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