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speedometer calibration

12004 Views 4 Replies 5 Participants Last post by  axisT6
I finished a 6 in superlift on my OBS GMC and with 33's my speedometer is off like 5-10 miles an hour, is there any way to fix it with out buying that speedometer calibrator from superlift?
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sparkyballz said:
I finished a 6 in superlift on my OBS GMC and with 33's my speedometer is off like 5-10 miles an hour, is there any way to fix it with out buying that speedometer calibrator from superlift?
If your truck is 1995 and below, there is a tech article on www.fullsizechevy.com the tells you just how to recalibrate the speedo. If it is 1996 and later, go hypertech. :read:
 
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