I'm driving a jeep liberty with 255/75 r16 tires and am wondering what gearing I should regear too and what are the possibilities of adding in at least one locking differential along with the regearing. I'd like to get both differentials to be locking if possible, but I'm not sure if it is possible to get a locking front differential and the regearing.
Regearing and Locking Diffs
- Thread starter KingKJ
- Start date
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duderz7
Full Access Member
The lowest gearset available for the front (dana 30a) is 4.10. It can be hard to find as it's unique to the jeep Liberty kj. Lockers as well as limited slips are easier to find. I'm running the Spartan helical and have been quite happy with it.
how rare is it to find and would it be worth it with he tires I am at right now? Also, are you running a front locker or only rear?
Sport models with the four cylinder engine came with 4.10 diffs. I think it’s still possible to buy a gear kit to rebuild them, but expensive. You can enter your VIN at this link to get the Build Sheet for your Jeep to see what you’re starting with:
fcacommunity.force.com
FCA RAM
duderz7
Full Access Member
I have the stock trak-loc in the rear, which I recently rebuilt and the Spartan helical diff up front. As klc said above it's the 4-cylinder kj's that have the 4.10. it took me a lot of digging to find mine. Here's a link to my build for your review.
Thread 'Diff and axle hunting' https://www.jeepkj.com/threads/diff-and-axle-hunting.78585/
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