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

New 12v owner

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  #21  
Old 03-16-2010, 12:12 PM
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Yup. It's a big difference between this truck and my 24v. I can do well over 100mph no problem with it.

Have a gov spring kit coming. Hard to believe that this thing is bone stock. I'm gonna pop it's cherry hahaha!
 

Last edited by nate379; 03-16-2010 at 12:16 PM.
  #22  
Old 03-16-2010, 12:26 PM
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Originally Posted by nate379
70mph is WOT. I can hit maybe 75 if I really push it hard to the mat, but that's all she wrote.
ouch that sucks

Originally Posted by 12valvetater
You have 4.10s and stock gov springs this is normal.
makes sense to me! I have the 3.xx gears (dont remember exactly) which would explain the diff
 
  #23  
Old 03-16-2010, 12:28 PM
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3.55

Was thinking of putting a set in, though with all the irons I have in the fire, that may never happen. A US Gear Overdrive would be awesome too, but they sell for more than I paid for the truck, so that's not going to happen!
 
  #24  
Old 03-16-2010, 12:36 PM
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An 8spd would be awesome, but I'm not going to go about doing all that. Maybe if the truck CAME with it though
 
  #25  
Old 03-16-2010, 08:09 PM
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Originally Posted by 85_305
Like I said, I'm speaking from experience here. Believe me or dont. Or just try it out for yourself hehe
i have bhaf in mine and my boss has three trucks with k&n none of them picked up three mpgs

---AutoMerged DoublePost---

you might pick up three mpgs if you did intake exaust and bumped the timing
 

Last edited by wes-cummins; 03-16-2010 at 08:09 PM. Reason: Automerged Doublepost
  #26  
Old 03-16-2010, 08:19 PM
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And run taller skinnier tires.
 
  #27  
Old 03-16-2010, 10:50 PM
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Changed the oil and fuel filter, was hoping it was just a dirty fuel filter that was causing the rough running when cold, but no still doing it.

Got it to backfire/pop a few times even while reving it. I don't know if the timing is off or something else? I'm going to try and do an overhead on it tomorrow, waiting on the tools to come in for the timing.


Is the dealer the best place to get oil for the NV4500?
 

Last edited by nate379; 03-16-2010 at 11:11 PM.
  #28  
Old 03-16-2010, 11:15 PM
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Originally Posted by 85_305
50-60hp? What? Last I looked, a good fuel plate was worth 140hp, plus afc tuning, intake and exahust your probably looking close to 370hp and 700-750 lbs of torque. A gsk would help even more. Not quite near 50-60hp.
wow. 140hp for just a fuel plate? apparently im missing something
 
  #29  
Old 03-16-2010, 11:45 PM
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Originally Posted by nate379

Is the dealer the best place to get oil for the NV4500?
Nate, go with Amsoil. Its quite a bit cheaper than the Castrol Syntorque.
 
  #30  
Old 03-17-2010, 06:14 AM
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if its running rough mabey your low on fuel pressure, if you got tools and the time bump your timing
 


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