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gearing ok?

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Old Apr 21, 2006 | 11:19 PM
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gearing ok?

I have an '05 f150 supercrew with a 6.5" lift and 20" wheels. is the stock rear end something that should be modified due to the increase in wheel/tire size? and if so any ideas as to what gears to use
 
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Old Apr 21, 2006 | 11:45 PM
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Can't answer that without knowing the tire size.
 
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Old Apr 22, 2006 | 10:27 PM
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thanks , the tire size is LT325R20
 
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Old Apr 23, 2006 | 11:02 AM
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What gears are you running now?

Unless you've got 4.10's I suggest regearing.

CMOS
 
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Old Apr 23, 2006 | 10:14 PM
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just using the stock gears( not sure what ratio) but I bought the truck from the dealer already lifted w/ the tire/rim pkg
 
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Old Apr 23, 2006 | 10:19 PM
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Check the tag on the inner door, or the metal tag affixed to the rear pumpkin. It will give you a code, that will tell us what gears you have. Also, you might want to ask the dealer what gears the truck has, since they may have changed them.
 
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Old Apr 23, 2006 | 10:38 PM
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the metal tag on the rear dif reads V953S and then below 73975 5F07
 
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Old Apr 23, 2006 | 10:40 PM
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"73975"

Should be 3.73 gears, in a 9.75" axle.
 
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Old Apr 23, 2006 | 10:45 PM
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Wheelma1 do you think that is ok for the set up I have or do you think that it is something I should change?
 
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Old Apr 23, 2006 | 10:49 PM
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Well you wont damage anything running like that. The only thing you might notice is poorer gas mileage versus stock. If it runs fine, goes down the road fine, and you are happy with it, dont mess what ain't broke (a gear swap is NOT cheap!).
 
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Old Apr 23, 2006 | 10:59 PM
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Thanks, I am no stranger to poor gas mileage , right now I get a whopping 8 mpg thankfully it is not a daily driver, what with gas topping out at $3.09 a gallon here in southern california
 
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