3rd Gen Engine and Drivetrain -> 2003-2007 5.9 liter Engine and drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

Gear ratio?

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Old Jul 19, 2011 | 01:51 PM
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wrightbike450's Avatar
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From: Banks, OR
Gear ratio?

whats the stock gear ratio in my 2005 and what gear ratio should i go to for 37s and what brand are good?
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Old Jul 19, 2011 | 02:25 PM
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From: Carlos, Texas
it could be 4:10 or 3:70. The bigger the tire, the lower the gear you want. 4:10 is the lower of the two. be prepared for crappy mileage.
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Old Jul 19, 2011 | 05:48 PM
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It should be on the sticker inside the glove box, on the dealer info sheet if you still have it, or you can get the vin and do a vin decoder...
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Old Jul 19, 2011 | 07:12 PM
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From: Kuna, Idaho
What trans do you have?
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Old Jul 22, 2011 | 04:21 PM
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From: Banks, OR
the 48re auto
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Old Jul 26, 2011 | 12:27 PM
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From: Kuna, Idaho
For 37's and no real towing 4.56's are good and slightly lower than stock which will compensate for the tire weight, for lots of towing go 4.88's.
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