G. 42RLE 4 Speed Auto

42RLE

This transmission was used in the Jeep Wranglers in 2003 through 2011. We currently do not offer any engine conversion adapters for this transmission. We have installed several Atlas transfer cases to this transmission. The rear section of this transmission is the same circular bolt pattern with a 23 spline output. The transmission gear ratios are as follows: 1st gear is 2.84:1; 2nd 1.57:1; 3rd 1:1, and a overdrive gear of .69:1. We have devised a new gear reduction unit that bolts to the 42RE transmission, providing a 2:72 reduction and allowing you to retain your stock transfer case ratio. This unit does not change the driveshaft lengths. It is a cable shifted unit and doubles your transfer case options.


The RubiCrawler: 

Features: The RubiCrawler increases your available gear ratios allowing you to gear your Jeep to the terrain in which you’re wheeling on. The various ratios will allow you more control of the vehicle which results in extreme off road performance while maintaining a fun and safe offroading experience. 

Ratios with a Stock New Process 231/241 are a 2.72:1 and a 7.40:1
Ratios with a Stock NP Rocktrac are a 2.72:1, 4.0:1 and a 10.88:1 

Stock Transfer Case Functions (all Jeeps): 

With the RubiCrawler installed in any Jeep, the Normal 2WD feature of your Jeep does not change. The city or rural road handling of your Jeep is the same as it was the day you bought the Jeep. 

Stock Transfer Case Functions with the RubiCrawler in High Gear (all Jeeps): 

RubiCrawler in high range and the transfer case in 4WD high range (all Jeeps). The gear ratio of the transmission does not change. This feature gives you power to all four wheels. 

RubiCrawler in high range and the t-case in 4WD low range (non Rubicon Jeeps): 

The final gear ratio with the transmission in any gear is reduced 2.72 times lower. This feature gives you power to all four wheels. 

RubiCrawler in high range and the t-case in 4WD low range (Rubicon Jeeps): 

The final gear ratio with the transmission in any gear is reduced 4.0:1 times lower. This feature gives you power to all four wheels. 

Stock Transfer Case Functions with the RubiCrawler in Low Gear (all Jeeps): 

RubiCrawler in low range and the transfer case in 2WD (all Jeeps). The final gear ratio with the transmission in any gear is reduced 2.72 times lower. This feature does not give you power to all four wheels but provides slower speeds and more throttle response for easy trail use. The nice feature about this is that you have more torque and better handling. 

RubiCrawler in low range and the transfer case in 4WD high range (all Jeeps): 

The final gear ratio with the transmission in any gear is reduced 2.72 times lower. This feature give you power to all four wheels and provides a shift-on-the-fly option for four wheel drive. The New Process transfer case can be shifted into high ratio on the fly; so if you’re in sand, mud or an offroad trail and need power to all four wheels, this is a great option. 

RubiCrawler in low range and the transfer case in 4WD low range (non Rubicon Jeeps): 

The final gear ratio with the transmission in any gear is reduced 7.40 times lower. This feature gives you power to all four wheels. This is an extreme crawl ratio that provides a slow controlled approach to an obstacle. 

RubiCrawler in low range and the transfer case in 4WD low range (Rubicon Jeeps):

The final gear ratio with the transmission in any gear is reduced 10.88 times lower. This feature gives you power to all four wheels. This is an extreme crawl ratio that provides a slow controlled approach to an obstacle. 

Key Installation Points: 

No Driveline Modifications.

No Crossmember Modifications.

Most installations can be done in 8 hours.

Clean factory look upon completion.

 

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