SpeedO adjustment

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superman_jjs

Post subject: SpeedO adjustment

PostPosted: Mon Apr 30, 2007 4:31 pm

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4 BBL ''Hyper-Pak''

Joined: Mon Jul 31, 2006 3:08 pm
Posts: 41
Location: Washington State
Car Model:

In my 81 D150 my speed "O" is 5 mph shy of where it should be. I dont have huge tires on (195 15's) and I would like to adjust it so that it is closer to being correct (spot on would be nice).

Any info on adjusting it?

Thanks,

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1981 D150
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SlantSixDan

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PostPosted: Mon Apr 30, 2007 4:36 pm

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Board Sponsor & Contributor

Joined: Thu Oct 31, 2002 5:39 pm
Posts: 24763
Location: North America
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They can't be adjusted, per se. If yours is reading consistently low, then a speedometer drive pinion with fewer teeth should be installed.

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