Crawling in a 4×4 takes finesse, tactics, patience, and the right crawl ratio to properly transfer torque to your wheels. So what is crawl ratio? Well, simply put:
The lowest gear ratio the vehicle is capable of in first. It considers the ratios of the transmission, transfer case, and axles.
You’ll need to do a little math math to figure it out. Simply take your transmission first gear ratio x transfer case low gear x axle gear = crawl ratio
For example, the crawl ratio on my TJ build is 47.5 (3.83 x 2.72 x 4.56 = 47.5), which is acceptable for a MPG conscious daily driver. Simp... Continue Reading