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Ford 83-94 6.9 and 7.3L General Discussion of 83-94 6.9 and 7.3 Liter Ford Diesels

gear ratio

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  #11  
Old 03-07-2010, 02:50 PM
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so what is a good ratio to go with to get better mpg and still pull decent
 
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  #12  
Old 03-07-2010, 05:40 PM
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3.55 is the best. Mine 6.9 has a 3.55 with a 4 speed. I get about 19 highway(empty). 12 doing decent towing.
 
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  #13  
Old 03-07-2010, 10:31 PM
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It will depend on where you do most of your driving. I have 4:10's and get better mileage in city driving than freeway driving.
 
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  #14  
Old 03-07-2010, 10:51 PM
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im a big fan of a 3.73 ratio. i dont know if they make those gears for the sterlings or not but ive always liked that gear ratio on stock trucks
 
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  #15  
Old 03-08-2010, 08:19 PM
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I have 5:13s behind my ZF 5 speed.. I can pull your house!
 
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  #16  
Old 03-13-2010, 03:41 PM
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now max speed im tryin to make past 3 gas stations before i got to fuel up again as it stand my truck will pull like no tommorrow but i aint doin to good on the highway
 
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  #17  
Old 03-15-2010, 11:35 AM
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is there any way to tell from the VIN? I'm looking at a truck on the web and would like to know. It's an '06 2500 6-sp.
 
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