Novak Conversions Jeep Wrangler TJ engine mounts

What gear ratio should I install in my Jeep Wrangler TJ / LJ? (and other re-gearing FAQs)

Can you still see his posts? The best part of him blocking me is now I can actually call him names and he can't see it.

He blocked me last time we did this. It was at the very same time he started following me. The chaotic little boy can't see my offer to assist.
 
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If I knew all the answers to my Jeep questions, why would I bother?

If you had read the thread you would likely already know the answers to your questions and there would be no need to ask again.


Do you already have 4.56 installed?

This is one of the most important questions asked and you never answered it. What gears do you currently have installed?
 
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If you had read the thread you would likely already know the answers to your questions and there would be no need to ask again.




This is one of the most important questions asked and you never answered it. What gears do you currently have installed?

Captain the gears are stock, I believe my jeep has the stock 3.73 currently
 
Then you might as well go as deep as possible, 5.13. if you already had 4.56 that might be ok and not with the cost of going deeper but if you're regearing you might as well do it right.

Captain this jeep is my DD with a lot of highway/freeway driving. While I appreciate the value of deep gearing for off-road use, do you think 5.13 might be too deep for daily highway driving. Here in Las Vegas, 70mph is slow compared to the flow of traffic. Your thoughts? Remember, I have the 4.0 with 5spd manual.
 
Captain this jeep is my DD with a lot of highway/freeway driving. While I appreciate the value of deep gearing for off-road use, do you think 5.13 might be too deep for daily highway driving. Here in Las Vegas, 70mph is slow compared to the flow of traffic. Your thoughts? Remember, I have the 4.0 with 5spd manual.

The 4.0 doesn't even start really making power until 2400 RPM, you don't ever want to be cruising at less than 2500 RPM and being over 3000 RPM at speed is no big deal. Having it be a manual transmission helps because you select what gears you want but with 4.88 you'd never want to be using 5th gear under 65 or 70 mph and 80 MPH would only be 3000 RPM.
 
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Here's speed per gear at 2500, 3000, and 3500 RPM with 4.88

Screenshot_20251111-212338.png
 
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Novak Conversions Jeep Wrangler TJ engine mounts