Diesel Bombers - Different speedometer??

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- - Different speedometer?? (https://www.dieselbombers.com/12-valve-2nd-gen-dodge-cummins-94-98/68226-different-speedometer.html)

Rodburner07

01-18-2011 07:44 PM

Different speedometer??

I am wondering if anyone out ther knows if ther is any companies to sell different size plastic gears for the seedometer on a NP241dhd transfer case, I have 4:10 gears and went to bigger tires to get a little higher gear ratio and im running right about what 3:73 gears are compared to with regular size tires, i have 255/85/16 tires and at 60mph im running about 8 mph faster than what speedometer shows, any ideas??

Red_Rattler

01-21-2011 01:12 PM

GPS and adjust your driving :D

Flight911

01-21-2011 02:51 PM

Different speedometer??

Call ur cummins dealership. I went from 410's to 356 and changed my out.

Brandon

c12vpwr

01-22-2011 01:41 AM

u sure your running faster mine is off by 5mph but slower then the speedometer shows

Rodburner07

01-23-2011 10:25 AM

bigger tires= going faster i know, a speeding ticket shows......

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at 55 on speedo im about 5 mph faster, at 65 on speedo about 7 to 8, and at 75 on speedo its about 10, i just want my speedo to b a lil closer cause sometimes it slips y mind a lil and wa lahhhh, speeding ticket :argh:

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