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Old 05-16-2013, 06:05 AM   #15
6mm
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The 3.73 gears looks like it might be my mistake so can I at a later date have the gears changed to the 4.30 or are there other items I need to watch for when changing gear ratio.
Would this be a costly change??
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Old 05-16-2013, 07:15 AM   #16
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I guess that was sort of a dumb question because it is a 4x4 and would have to do both axels correct.
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Old 05-16-2013, 07:22 AM   #17
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The 3.73 gears looks like it might be my mistake so can I at a later date have the gears changed to the 4.30 or are there other items I need to watch for when changing gear ratio.
Would this be a costly change??
6mm
They can be changed, but probably 3 to 4 thousand minimum to swap them out. They may have to reset the ECM for a speedo correction. It will pull with 3.73 gears but will do more gear hunting in and out of overdrive. Unless you are going to be towing a lot I would not spend the money for a gear swap.
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Old 05-16-2013, 07:31 AM   #18
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I guess that was sort of a dumb question because it is a 4x4 and would have to do both axels correct.
I spent 3 K to swap gears in a jeep wrangler. 4 K time I added a Eaton Elocker to the front end. The rear had a factory limited slip. These were little Dana 30 and 44 gear sets. The SD gears are much larger and probably more money. It may cost 5 K to do a SD truck front and rear before its all said and dune. For comparison sake only, I put a set in a peterbilt truck, both rear ends last year. About 15 K for parts and labor.
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Old 05-16-2013, 07:52 AM   #19
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If you don't get the 4.30 gears the truck will be a gutless wonder for towing. That is for the 6.2 gas anyway.
Does that apply to a tag trailer that won't gross over 7,000 pounds?

SIL just bought a new F-250 6.2L with 3.73 e-locker diff for occasionally towing an enclosed horse trailer with GVWR of 7,000 pounds. That pickup will mostly be his commuter car and grocery getter, but he tried to spec it so it would easily tow that trailer. His main concern was tongue weight, so most F-150s wouldn't work without being overloaded with 1,000 pounds of hitch weight, and the ones with the HD payload package were rare as hens teeth.
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Grumpy ole man with over 50 years towing experience. Now my heaviest trailer is a 7,000-pound enclosed cargo trailer, RV is a 5,600 pound Skyline Nomad Joey 196S, and my tow vehicle is a 2012 F-150 3.5L EcoBoost SuperCrew.
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