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The Dana 20 is generally compatible with the "big hole" Dana 18. One exception is the version used with the THM400 in full-size Jeep trucks, which used a different spline number on the input gear. Applications: Jeep CJ; Jeep SJ; 1963-1979 Willys-Overland Jeepster; 1979 International Scout with 727TF AT uses the 23 spline 26 tooth gear.
It is Jeep's first six-speed manual transmission and Chrysler's second after the Dodge Viper T-56. The NSG370 does not use standard gear oil for lubrication. This transmission utilizes bronze synchronizer collars resulting in sensitivity to lubricant make-up.
Crawl ratio is a term used in the automotive world to describe the highest gear ratio that a vehicle is capable of. Note that gear ratio, also known as speed ratio, of a gear train is defined as the ratio of the angular velocity of the input gear to the angular velocity of the output gear, and thus a higher gear ratio implies a larger speed reduction, i.e. the input speed is reduced more at ...
The 45RFE was introduced in the Jeep Grand Cherokee in 1999, it is notable for including three planetary gearsets rather than the two normally used in a 4-speed automatic. It also features three multiple disc input clutches, three multiple disc holding clutches, and a dual internal filter system (one primary filter for transmission sump, one for the fluid cooler return system).
The AX15 built by Aisin was used in Jeeps with the AMC 242 (4.0L) Inline 6 engine, as well as the AMC 258 (4.2L) Inline 6 engine and AMC (2.5L) Straight 4 engine.This included vehicles such as the Cherokee(XJ), Comanche (MJ), and Wrangler (YJ and TJ) and 1994-1995 Jeep Grand Cherokee ZJ as well as the 1st and 2nd generations of the Dodge Dakota.
1984-1997 Jeep Wagoneer; 1984-2001 Jeep Cherokee; 1993-2004 Jeep Grand Cherokee; 1986-1992 Jeep Comanche; 1987-1995 Jeep YJ Wrangler Note: there was no 96 model. 1997-2006 Jeep TJ Wrangler *option Dana 44 rear and Rubicon's had Dana 44's; 2007 only some early Jeep JK 2 door Wranglers had Dana 35 non c-clip axles. 2001-2007 Jeep Liberty; Dodge ...
The gearbox was designed so that, for efficiency, the fastest ratio would be a "direct-drive" or "straight-through" 1:1 ratio, avoiding frictional losses in the gears. Achieving an overdriven ratio for cruising thus required a gearbox ratio even higher than this, i.e. the gearbox output shaft rotating faster than the engine.
A variation of the Dana 60 known as a Dana 61 was made to accommodate gear ratios that allowed for better fuel mileage. This was done as a direct result of the 1973 oil crisis. A 3.07:1 gear ratio was common for these axles and unachievable in a regular Dana 60. To allow for the different gearing, the Dana 61 had a greater pinion offset.