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speedo calibration help?


harleytech

15+ Year Member

Joined
Sep 28, 2008
Messages
32
Points
3,101
City
palatka, fl. jax.
Vehicle Year
1996,1979
Transmission
Automatic
I have put in a 3.73 exploder rear axle and 31x10.5 under my truck and really need help figurin out what i need to do to recalibrate the speedo without buying a tuner. any ideas thoughts or help? original gears were 3.27 and tires were 245x75
 
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