Im runnin 35s on a 2.5 inch lift on my 2010 jku sport so i assume it has the 3.73s. It was a 1 owner so i doubt they regeared and didnt tell the dealer when it was traded. I dont run a procal yet but i know everyone says their setup and stock gears suck. I dont really think its that bad and ill be purchasing a procal today but i was just seein what the normal rpms for these gears are @ 70 mine were right at 2600 with od off.

 

I have a '12 JKU, manual tranny, 3.73s and 35s. I'm about 2k (maybe 2,100) in sixth at 70 mph.

 

Sounds like stock gearing to me.

 

I guess im tryin to figure out if im runnin normal or high. Like i said im not unhappy with how it drives, clearly its take off speed sucks ass but its a jeep.

 

I got a 3 inch lift with 35's should I be driving with the OD off or on?????

 

Od should be off so you dont search for gears all the time

 

thank you! I have been driving with it on all this time , what should be the the rpm when doing 70mpr on highway?

 

I woukd assume if you have the 3.73s like me it will be somewhere around 2600 without a procal with one it would be a little better i woukd assume

 

cool thanks that sounds about right

 

actually driving with od on or off should be determined by terrain, speed etc. If it is in od and not hunting or lugging you will be fine. why run at 2600-2800 rpms driving down a flat interstate at 75 when you will be fine at 2200rpm etc. let your vehicle tell you what it needs.