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

Gear ratio

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Old Apr 8, 2010 | 07:03 AM
  #11  
ztk7220's Avatar
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under my hood it says 4:10 and i go 70 at about 2400
 
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Old Apr 8, 2010 | 12:05 PM
  #12  
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2,000 is basically vertical on the RPM needle, right? (correction: it's a little before 12'oclock)

I'd say the RPM needle is at about the 11 o'clock position when I'm at 70, on OD. (correction: At 2,000, I'm exactly on 70 mph.) 4th has the two needles about sync'ed together.

Top speed is about 98 or about that. So it does some massive defueling, after the RPM needle passes the 12 o'clock position.

Sticker under the hood states, 3.5. And I'm pretty sure the truck is untouched. Mainly, being that when I bought it back in '01 or so, it only had 32K on the odometer.
 

Last edited by Threesixty; Apr 9, 2010 at 12:17 PM.
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Old Apr 8, 2010 | 05:46 PM
  #13  
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Ditto 2k + 3.55 + 5spd = 70 Wish I had 4.10's
 
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Old Apr 8, 2010 | 07:20 PM
  #14  
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Hmm sounds like I'm kinda in the middle at 2200ish… perhaps 3:73's . Shoot all I know is it's all better that 3.00 in my old 1st gen… granted it was a 3 speed auto
 
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