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

what gear ratios should i get?

Old Mar 14, 2011 | 07:42 PM
  #11  
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well thanks!
 
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Old Mar 14, 2011 | 07:52 PM
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Either one will help greatly.
 
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Old Mar 15, 2011 | 02:28 PM
  #13  
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it really is all the way you drive 4,10 will do ok fuel mileage if you dont exceed 55mph
 
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Old Mar 15, 2011 | 02:53 PM
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I really just dont see the point of lower gears than 3.73's with a diesel unless you have bigger than stock tires.
 
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Old Mar 15, 2011 | 02:57 PM
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when you pull the 410 out i will buy from you. i have 355 in my play truck and want the extra tow with 410s.
 
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Old Mar 15, 2011 | 05:18 PM
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3:73 will do ya fine,now ya got me wondering about something,my 95 12valve has 4:10s & i get 24.7mpgs regular driving with a 5spd auto usaully drive it at around 60mph although i have more done to mine then dieselfunohio shouldnt he still be getting around 18-20 mpgs?
 
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Old Mar 15, 2011 | 11:16 PM
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Originally Posted by bluedieselram
3:73 will do ya fine,now ya got me wondering about something,my 95 12valve has 4:10s & i get 24.7mpgs regular driving with a 5spd auto usaully drive it at around 60mph although i have more done to mine then dieselfunohio shouldnt he still be getting around 18-20 mpgs?
1) you get nearly 25mpg out of 4.10's?
2) How do you have a 5spd auto in a 95? Did you swap trannies?
 
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Old Mar 16, 2011 | 04:31 AM
  #18  
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Do you have a 618 with a add on overdrive uint ? thats what I was thinking of doing and keeping the 4.10 I believe that one to one input and output with a lockup is best though. any time you add more moving pasts you create friction baybe a 3.07 gear for highway with a underdrive uint to make the hills only???
 
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Old Mar 16, 2011 | 10:36 AM
  #19  
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Originally Posted by EasternAggie
1) you get nearly 25mpg out of 4.10's?
2) How do you have a 5spd auto in a 95? Did you swap trannies?
1)yes 4:10 front & end back front is a dana60 back a dana80
2)yes i had my dad mechanic build me a 5spd auto & it has an overdrive unit
 
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Old Mar 16, 2011 | 02:53 PM
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Originally Posted by EasternAggie
I really just dont see the point of lower gears than 3.73's with a diesel unless you have bigger than stock tires.

DUH.

---AutoMerged DoublePost---

Originally Posted by pukie370
when you pull the 410 out i will buy from you. i have 355 in my play truck and want the extra tow with 410s.

hey man, PM me. I'd love to trade if we match up
 

Last edited by Dieselfunohio; Mar 16, 2011 at 02:53 PM. Reason: Automerged Doublepost
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