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Old 05-22-2012, 06:48 AM   #1
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Diff gears

Hi all just after some advice I'm thinking of changing my diff gears in the near future and wondering what would be best all round I'm currently running 31's but have 29's and possible getting 33's need the gears to suit tyres,towing,fuel consumption and off course in the bush any help

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Old 05-22-2012, 06:56 AM   #2
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Need to know what engine and trans you have?

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Old 05-22-2012, 06:59 AM   #3
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4.0l 5speed and current diff gears are 3.07
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Old 05-22-2012, 07:04 AM   #4
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4.56 for 33's
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Old 05-22-2012, 07:25 AM   #5
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So what will that do to my fuel use age if I run 29's on the highway
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Old 05-22-2012, 07:40 AM   #6
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Kill it. You regear to match a certain tire size.. Running larger or smaller tires then your gearing is ment for will have negative effects on gas millage and overall performance. In the case of smaller tires with gearing ment for 33's you will be running at a very very high rpm for the speed your going
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Old 05-22-2012, 07:59 AM   #7
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That's y I need gears in the middle to suit these needs because ATM I'm doin 60 mph and sitting on 1700 rpm I just want to bump the rpm up a bit so I'm not goin down gears at a hill to keep goin up the hill

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