Axles - Differentials | 2020-2023 Jeep 3.0L EcoDiesel

The Dana 30 and Dana 44's have proven themselves as relatively reliable on moderately used trucks running stock, or close to stock tire size and power output For those of us that demand substantial power increases and larger tires, there is room for improvement to improve the reliability and performance that they can afford One of the best upgrades we can recommend for anyone that has increased tire size, is that of a ring and pinion ratio upgrade As previously stated, most of these trucks came factory with a 3.73 ratio, designed to have a proper run out with a stock size tire (roughly 31") But as soon as you upgrade to a 35" or larger tire, all of a sudden your RPM vs. speed are effected, even causing a disruption of the shift pattern on automatic transmission equipped trucks

Lets give the example of upgrading to a 37" tire By using cross multiplication, we can determine that in order to have the same RPM vs. speed as with the factory tire size, you would want to install a 4.45 gear ratio (3.73/31*37) Unfortunately, in this scenario there is no such thing as a 4.45 ratio, but the closest would be a 4.56 that is readily available Or, you can also opt to go with a slightly higher ratio of 4.10 that would give you a lower RPM vs. speed compared to stock.
Besides replacing the ring and pinion, we also offer numerous other upgrades, such as ARB Air Lockers, larger axles, rebuild kits, axle trusses for those that like to get airborn, and so much more As always, if you have any questions about which product is right for you and your truck don't hesitate to give us a call or send us an e-mail to [email protected] and we would be happy to help.

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