Christian Posted April 19, 2009 Share Posted April 19, 2009 It appears I may have the option to use a rear end with a gear ratio of 1.9 or one with a ratio of 4.1 on my 21 ft. 1984 new horizon with a 22r motor. Does anyone know what difference in power of MPG I would get if using either of the above rear ends? Thank you. Quote Link to comment Share on other sites More sharing options...
Tom W Posted April 20, 2009 Share Posted April 20, 2009 Mines a 4.10 A 4.56 would probably be better could use OD more, a 3.90 in theory better fuel mileage but wouldn't have any power. Quote Link to comment Share on other sites More sharing options...
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