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chnging rear end gear ratio

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Old 04-04-2014, 07:12 AM
4xHIBOY's Avatar
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chnging rear end gear ratio
I have a 99' f150 with a 7" lift and 37" tires. Having the tranny rebuilt. What can I do to the rear end gears to ease wear on transmission?
 
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Old 04-04-2014, 09:02 AM
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Change them to a lower ratio. That would be a higher number, like if you have 3.70 then go to 4.30.
 
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Old 04-04-2014, 10:19 AM
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With that big a lift and tires, you need at least 4.56's. If it's 4wd, you also have to change the front gears. You will also need a programmer to correct the speedometer/odometer.
 
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Old 04-07-2014, 10:25 PM
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Originally Posted by glc
With that big a lift and tires, you need at least 4.56's. If it's 4wd, you also have to change the front gears. You will also need a programmer to correct the speedometer/odometer.
2nd.
 
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