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Adapting the GM 6L80
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Jeep Transfer Cases
The 4L80E automatic transmission has increased in popularity, adapting to the Jeep transfer cases, listed below:
Dana Spicer Model 300 (1980 - 1986)
The Dana 300 is found in 1980 -1986 Jeep vehicles. It is one of the most respected transfer cases and is regarded as the gold standard by casual Jeepers up through the enthusiasts. While only provided in 1/4 Ton rated Jeeps, its strength surpasses this duty.
New Process 208, 219, 228 & 229 (1981 - 1991)
In 1980, the full-size Jeeps made a major shift in Jeeps 39 year history to a driver's side front differential and the widespread use of chain-driven transfer cases. These part time, chain driven transfer cases include the New Process 208, 219, 228 and 229 models.
New Process 207 (1984 - 1987)
The part time, chain-driven New Process 207 is found in 1984 -1987 XJ's and the 1987 YJ. The NP207 was the first transfer case that Jeep referred to as the Command Trac option.
New Process 231 (1988 - 2006)
The part time, chain-driven New Process 231 transfer case was introduced in the 1988 model year and is found in Jeep YJ's, TJ's, XJ's and MJ's.
New Process 242 (1987 - present)
The full time, chain-driven NP242 transfer case was introduced in the 1987 model year. The 242 premiered in XJ's and MJ's as the SelecTrac option. It was also used in 1991 -1998 ZJ's. The 242 persisted throughout the full run of XJ's and MJ's and continued on in the 2002 KJ.
New Process 241 (1987 - present) and 241OR (2003 - present)
The part time, chain-driven NP241 transfer case has three major variations. 1987 - present Dodge and Chevrolet vehicles. 2007 - present JK's including another variant starting around 2012 with external splines. Finally, the NP241OR RockTrac transfer case found in Rubicon Package 2003 - 2006 TJ's as well as 2007 - present JK's, sporting a 4:1 low range gear set.
Aftermarket Transfer Cases (Atlas, etc)
The transfer case offerings of Atlas and Stak provide deep low range gear sets as well as customizable input, output and drop options for demanding offroad use and other specialized applications.