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  #1  
Old 10-29-2009, 07:10 AM
yup
 
Join Date: Sep 2009
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Default gear ratio

does anybody know what kind of gear ratio i have in my rear diff? 2001 v6 4.0L 4x4
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2001 XLT 4x4 V6 4.0L auto
SAS'd D44 and 8.8. dual lockers, 38s, 12 bolt h1's, some other odds and ends
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  #2  
Old 10-29-2009, 07:15 AM
STL STL is offline
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What does the door sticker number say?

Look at the door sticker and find AXLE


Then find the number and letter on this chart
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  #3  
Old 10-29-2009, 07:23 AM
yup
 
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sweeeet! thanks man very helpful
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2001 XLT 4x4 V6 4.0L auto
SAS'd D44 and 8.8. dual lockers, 38s, 12 bolt h1's, some other odds and ends
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  #4  
Old 10-31-2009, 10:52 AM
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mines a 3.73. is that good or bad? i heard so much on the 4.10's does it make a difference?
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  #5  
Old 10-31-2009, 12:08 PM
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Quote:
Originally Posted by Ranger_EDGE View Post
mines a 3.73. is that good or bad? i heard so much on the 4.10's does it make a difference?
Depends on what you use your truck for.

If you are doing alot of towing or 4x4ing, then 4.10 is where its at. BUT if you are doing alot of commuting, then 3.73's generally give you better mileage.

The lower the gear numbers, the less accel but higher top speed. The higher the numbers, the more acceleration and less top speed. For us that translates into lower RPM at highway speeds with a lower gear, and opposite for a numerically higher gear ratio
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  #6  
Old 10-31-2009, 12:11 PM
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Quote:
Originally Posted by chainfire View Post
Depends on what you use your truck for.

If you are doing alot of towing or 4x4ing, then 4.10 is where its at. BUT if you are doing alot of commuting, then 3.73's generally give you better mileage.

The lower the gear numbers, the less accel but higher top speed. The higher the numbers, the more acceleration and less top speed. For us that translates into lower RPM at highway speeds with a lower gear, and opposite for a numerically higher gear ratio
Well said.
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