i have a 1999 D with 5.2 4x4! i wanna put some new gears in it. i dont know what size i know i want it to take off better off the start. i have to put the same gears in front and rear dif right? what size axles are in the rear and front?

 

4.56:1!!!

 

4.10

 

where is the best place to purchase gears from? dont i need some for the front to because its a 4x4?

 

You will have to replace both front and rear at the same time. I think the largest you can go is 4.10 (which I recommend) without a carrier brake. While your in there do a rebuild on the bearings and clutch packs if it is Limited Slip. It should state the gear ratio either, glove box on a sticker, under the hood on a sticker, or on the rear end tag on the cover bolts. You will either have a 3.55 or 3.92 ratio OEM.

Next do you know if you have a LSD rear diff, If you don't know. Raise the back end with a jack, then spin the rear tires,if both rear tire spin in the same direction. Then you have a Limited Slip Diff (LSD).

 

i didnt find the sticker where it sais which gears i have im pretty sure that it has 3:55 gears.ive decided i want 4:10's. it does not have limited slip rear end however i do have a eaton locker to throw in her i know the rear end is a9.25 but what size is the front?

 

If you know it's a Chrysler 9.25 Open Gearing Rear Differential, and your year is a 1999, then you have a 194 FIA Axle in the front and that has Open Gearing. If you have an Eaton Locker already then you need to make sure both carriers can be replaced without a carrier break to a larger size or the locker would work with the bigger NEW carrier.

I could find no carrier breaks when looking here http://www.ringpinion.com/DiffSide.a...=1&ModelID=218 nor could I find the 194 Axle with the correct gearing so I am at a loss. You might want to call them or my favorite place Six States http://www.sixstates.com/products/products.jsp