Crawl Ratios

[97ranger4x4]

Just out of curioisty I am curious what the crawl ratio for my truck in 4x4 low is. I have the 5R55E automatic tranny with the 4.0. Not sure if my gear ratio makes a difference but they are 3.73's.

Also if there is a formula that you use that would be cool also. How do crawl ratios effect your truck and the control you would have off road.

 

[arrabil]

The formula is:

read end gear ratio x transfer case ratio x transmission ratio : 1

I don't know the numbers to plug in for you though.

 

[JohnnyU]

Crawl ratio is the total gear reduction of your drivetrain. It provides better control when traversing technical terrain. More torque transfered to the ground at lower-more controlable engine speeds.

CR=First gear x tcase reduction x axle reduction

If you have a doubler or portal boxes on your axles, you would multiply those reduction values as well.