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Old 04-12-2013, 09:47 PM   #1
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Gear Ratio

My 94yj has 31x10 tires on it with a 2.5 lift , i have a 2.5L so im belive it has 4-10 gears. I cant seem to get it above 55 in 5th and 65-70 in 4th. so im thinking i need to put different gears in it but have no clue what size. and if any other vehicle gears are compatible so i could possbly get them from a salvage yard. any help would be thankful
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Old 04-12-2013, 09:55 PM   #2
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You shouldn't have a problem doing 75? My little 2.5l hits 75-80 with 30 9.50's keep it in 4th till on flat ground then punch it in 5th you should be at about 3k rpms

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Old 04-12-2013, 09:56 PM   #3
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you can go upto 4:88 with yout stock axles
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Old 04-13-2013, 08:26 AM   #4
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even on flat ground once i get up to 70-75 in 4th, then i put it in 5th it just bogs down and drops all the way down to 50-55 even then it seems to be struggling a little
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