Blue88Comanche Posted October 28, 2011 Share Posted October 28, 2011 My rear Dana 44 has a ratio of 3.54 and my XJ donor has a Dana 30 with a ratio of 3.55, can those gears be used together? the plan is to use a NP242, I like the idea of full time 4wd when it rains. most of the time i will be using 2wd thanks Quote Link to comment Share on other sites More sharing options...
Pete M Posted October 28, 2011 Share Posted October 28, 2011 yes, those ratios are perfectly compatible. :thumbsup: the difference in number is caused by the difference in gear sizes in bigger and smaller axles. the Dana 30 and Dana 44 have different numbers of teeth and that's as close as the manufacturer could come to the same ratio. other examples are 3.07/3.08 and 4.10/4.11 Quote Link to comment Share on other sites More sharing options...
91dieseljeep Posted October 28, 2011 Share Posted October 28, 2011 Yes those will work together i have the exact same axle combination as that and have not noticed any negative aspects of being .01 difference between the front and rear. Quote Link to comment Share on other sites More sharing options...
Blue88Comanche Posted October 28, 2011 Author Share Posted October 28, 2011 thats good, looks like dad's xj donor has more parts i need than he does :yes: Quote Link to comment Share on other sites More sharing options...
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