How to find what Rear Axle ratio u have

[Airmaster]

Hi guys, I am just curious as to how I know what my stock rear axle gearing is. And how would I know if i were to have a limited slip dif?

I'm kind of uneducated on the matter, so sorry if this is a chore.

I doubt my truck has anything much upgraded from OEM, it is a 2006, base model B3000 5 Speed.

I'll also throw in the question... Will a regearing help out much? What exactly will it do?

 

[sfwjesse]

http://www.therangerstation.com/tech_library/Axles.html

Look inside the door for the axle code and match it up with the chart in that link. Regearing is a pretty advanced project if you a throwing in a new ring and pinion. Probably not something i would personally try...if i wanted lower gearing i would throw a another axle in. Regearing changes your ratio for either more power or more speed. The higher the ratio, the slower your truck is but the more power you get out of it (better for crawling). The lower ratio gives you more speed for your RPM, but not much power down low.

 

[3.0ranger1227]

second line of the tag on one of the diff bolts. it should have "7 5" or "8 8" and then "3 73" or "4 10". 7 5 and 8 8 are the axle size, the others are the ratio. if it say 3L73 or 4L10 you have a limited slip.

This is all only true if your gears are stock.

 

[Airmaster]

Thanks for the replies, I checked my door sticker and I have a code 86. That translates to a 3.73 Gearing without the limited slip.

I think that gearing is fine for my uses, I was just worried that it may be lower than that and I would be able to get more out of it.

Does adding a limited slip mean changing the entire rear axle? If it does I'll pass on any axle modifications haha.

 

[idfeiid]

yes adding LS will require an entire carrier change IE resetting up your gears. its easier(cheaper) to install an LS axle from the junkyard. the other option if you are having traction issues is install a lunchbox locker like a lock rite or a no slip. those are both easy installs and can be done by the majority of backyard mechanics.

 

[Airmaster]

Oh alright, I'll keep that in mind, thanks!