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

Gearing for 37's???

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Old 09-28-2010, 01:28 PM
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Question Gearing for 37's???

I'm planning on buying some 37" tires for my 12v, I use it as a daily driver around town to drive to school and work. id say about 50/50 for city and freeway use. I'm building this truck for prerunning as well so I wanted a good gear for prerunning and not to kill me around town. I have stock 3.55 in the rear as of now. What do you think would be the best gear in the rear so I'd still have power and responsiveness to the throttle?

Thanks Everyone!
 
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Old 09-28-2010, 02:20 PM
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i have 4:10s and run right at 2k at 70. brings it back to stock
 
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Old 09-28-2010, 06:21 PM
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x2 on 4.10s
 
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Old 09-28-2010, 08:52 PM
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Thanks! I'll get some 4.10's then!
 
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Old 10-01-2010, 02:42 PM
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if you can tune your afc right, and have a fast spooling turbo, try out your stock 3:55s. if i could go back and not buy 4:10s and keep 3:55s i pry would
 
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Old 10-01-2010, 04:12 PM
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Originally Posted by dan33klein
if you can tune your afc right, and have a fast spooling turbo, try out your stock 3:55s. if i could go back and not buy 4:10s and keep 3:55s i pry would
really? sounds like you have or had some 37s on your truck? I have my truck adjusted nicely and its real quick. how do you feel about your set-up that makes you wonder about leaving the 3.55 with 37s if you dont mind me asking?
 
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Old 10-01-2010, 08:07 PM
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ok i`ll be the black sheep...... 4.56s for 37s!!!! i have 4.10s with 35s and it is great my buddy has 37s and 4.56s he said it put his truck back to the way it was stock..beside the height of the tire you are adding weight...
 
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Old 10-02-2010, 08:53 AM
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i've got a set of 4:10's i'll trade ya
 
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Old 10-02-2010, 09:20 AM
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i have 4.10s and i run 2400 going 70
 
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Old 10-02-2010, 06:24 PM
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Originally Posted by BAD *** RAM
i've got a set of 4:10's i'll trade ya
That's a hell of a deal for me since buying one would cost a lot. Only problem is that my truck is my only vehicle and I use it everyday for either work or school. Since you're so far I know my truck and prob yours to would be outta commission for at least a week waiting for our parts to ship to each other. I reply appreciate the deal though. Thanks for the offer, but I don't know if it would work out.
 
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