whats the ratio on the ATX14A low range transfer case?

[FUELER]

QX4 with the all-mode ATX14A transfer case

 

im trying to figure out the ratio for low range

 

The QX4 technical book says this:

 

GEAR RATIO HIGH 1

GEAR RATIO LOW 2.596

 

and then i know the final drive is a 4.636

 

 

 

how do i convert this into the ratio, you know how the jeep guys say 4:1 transfer case or whatever....

 

Thanks in advance

[jj big shoe]

You'll have to know info specific to your drivetrain, but this might help.

Gear Ratio Calculator

[XPLORx4]

When the jeep guys say 4:1 transfer case ratio, they mean 4:1. Their low-range gearing has a 4:1 reduction, while your transfer case is 2.596:1. That's not very low for severe off-road use, which is why AC and Calmini offer 3.7:1 or 3.92:1 crawler gears for the TX10 transfer case, which has a stock low range of only 2.02:1.

 

If you want to calculate your crawl ratio in 4LO, you multiply the first gear ratio by the transfer case ratio by the final drive ratio. Let's assume that your first gear ratio is 2.785:1.

 

2.785:1 x 2.596:1 x 4.636:1 = 33.51:1 crawl ratio

 

Another [simpler] Crawl Ratio Calculator

 

My pathy's OEM crawl ratio was 2.785x2.02x4.363=24.55:1

 

With new diff gears and AC's crawler gears, it's now 2.785x3.7x4.636=47.77, a nearly 2:1 improvement in the crawl ratio from stock!

Edited September 12, 2008 by XPLORx4

[FUELER]

great info, thanks guys!!

 

wow 2.596:1 is not very low at all. and here i am thinking its closer to 4:1 yeah right!

[XPLORx4]

great info, thanks guys!!

 

wow 2.596:1 is not very low at all. and here i am thinking its closer to 4:1 yeah right!

 

Well, you should note that most OEM transfer case ratios aren't close to 4:1. Most are around 2.5-2.7. Even the FJ's ratio is only 2.56. Only the Jeep Rubicon has 4:1 transfer case gearing in from the factory.