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Discussion Starter #1
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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don't be an ass!
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Well you could buy a Hpp3, or a nelson tune, or try and find a dealer that will do it for you. Some dealers are more modification friendly than others. :crazy:
 

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GMFS Enforcer
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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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