dlincoln91

i have a 2008 jk sahara unlimited
it has the towing package
im just wondering how to know
it has dana 44 rear with dana 30 front

RedneckJeep

It has the 3.73s.

RedneckJeep

That's right, but the Xs and Saharas HAD the option for 4:10 in '07 IF you ordered with the towing package. That was changed in '08 so that only the Rubicons could get the 4:10.

HarryBallz

If you know your tire revs/mile you should be able to figure it out by comparing road speed to RPM in top gear (or any gear as long as you know the ratio).

Copy from another of my posts:
MPH = RPM * 60 / (Rear Axle Ratio * Trans Ratio * Tire revs per mile), or
RPM = Rear Axle Ratio * Trans Ratio * Tire revs per mile * MPH / 60

Top gear ratio is 0.84 for the manual & 0.69 for the auto.
Tire revs are 661 for stock Sahara w/ 17 inch wheels, 653 w/ 18" wheels

RedneckJeep

Not wadded at all. Just making sure the OP knew the difference. That's all.

blkpearl

it should be 3.73, and upgraded tow package had reciever, and 7pin plug to support towing a trailor with trailor brakes....some will even have the 4pin......but the rating changes with the trailor brake option....for the unlimited with the jeep class I light duty 2000lbs, with the class II medium duty 3500lbs......attached are the pics of the dana 30 on the top, and dana 44 cover on the bottom. hope this helps

BlackNorthernJK

or just break out the jack and a crayon....mark a line on your rear axle with it lifted in the air spin a rear tire two times and count how many time the axle spins....if it's 3 turns and almost a fourth 3.73's if it's definately 4 turns and a little more 4.10's

hawgrider1200

sumbuddy said if u input ur vin number on the internet jeep web site sumwhere they'd tell ya which one it is

My sticker is in the glove box and it said I had 4.10's on my X

BadDrivr

What he said. just be sure youre in neutral or ya may end up watching each wheel turn while the drive shaft stays put.

RedneckJeep

Yall, it's an '08 NON Rubicon with the towing package. Unless somebody changed um out, it aint got 4.10s, it had 3.73s.