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Old 08-15-2007, 08:10 AM
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Gearing

I have a 2005 Excursion 6.0 with a 7 inch SuperLift and 37x13.5x22 tires. The stock gearing is 3.73 what gearing should I change too. The tires are Toyo Oper Country they mesure 36 inches. Thank You!!!

Last edited by v210r1; 08-15-2007 at 08:53 AM.
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Old 08-15-2007, 08:22 AM
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4.56 would be your best bet.
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Old 08-15-2007, 08:22 AM
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For 37s the correct gearing would be 4.88s, but that'll kill your mpg, if you're worried about that. You could get away w/ 4.56s but thats the highest I'd stop at, 4.10s you'll really be sacrificing power.
Here's a link on gear ratios: 4Lo.com :: Gear Ratio & Tire Size Chart

-BG06.
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Old 08-15-2007, 08:32 AM
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Thanks Guys
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Old 08-15-2007, 08:43 AM
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4.30 for sure unless you tow very often, then 4.56's.
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Old 08-15-2007, 08:59 AM
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I was told 4.30 before but you don't see alot of people with then. I tow a little. I have a 21 foot toy hauler.
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Old 08-15-2007, 09:02 AM
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How heavy is the toy hauler?

Actually, it's yours... you will probably upsize in the future anyway, 4.30's will pull most anything within the range an excursion can legally, but the 4.56's will do it a bit easier.
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Old 08-15-2007, 09:09 AM
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Total 10000 lbs, I can't fit anything bigger at my home. It perfect size for my family of 4. But you never know you can always upgrade!!!!!
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Old 08-15-2007, 08:23 PM
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Either 4.30's or 4.56's. 4.10's will be too high and 4.88's will be too low. I'm running 4.56's in my truck but am running 39.5's and dont feel like I have enough low end. If I had the truck I would put 4.56's with 36's.
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Old 08-16-2007, 02:52 AM
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ive been thinking about regearing my truck also. what is the approximate cost to do this on the front and rear ends? anyone know??
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