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4xHIBOY

04-04-2014 07:12 AM

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?

jgger

04-04-2014 09:02 AM

Change them to a lower ratio. That would be a higher number, like if you have 3.70 then go to 4.30.

glc	04-04-2014 10:19 AM

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.

Simply67X

04-07-2014 10:25 PM

Quote:

Originally Posted by glc (Post 5076362)

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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