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12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

change the gears?

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Old Jun 9, 2009 | 11:04 PM
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bowtech's Avatar
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From: Arizona
Default change the gears?
has any one changed there rear diff. gears? i was told insted of the dtock 3.50 go to a 4.10 and it would get up and go. But i have not heard of messin with the gearing on diesels really. good idea?
 
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Old Jun 9, 2009 | 11:47 PM
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Very expensive...you will have to do both diffs plus you are going to lose milage. You should have no trouble pumping up the HP if you want it to "get up and go"
 
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Old Jun 10, 2009 | 12:13 AM
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yeah your going to feel like a 1st gen at top end. "wheres the speed?"
 
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Old Jun 10, 2009 | 11:13 AM
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o ok thanks cross that off my list
 
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Old Jun 10, 2009 | 12:12 PM
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depends on if your changing tire sizes too.
 
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Old Jun 10, 2009 | 01:22 PM
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Yeah, I'm not sure what it would be like on your truck, but on mine I wouldn't go from a 3.73 to a 4.10 unless I was running 37's or larger.
 
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Old Jun 11, 2009 | 01:54 AM
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if you dont have enough speed or power just add fuel and air then with the 354 you still get great milage
 
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Old Jun 17, 2009 | 06:01 PM
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I changed to 3.73 in the back running 35x13.5 works great
 
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