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Re: Installing a tachometer.

Posted: Thu Jun 02, 2016 9:58 am
by handcannon
Just a quick note here about alternator driven tachs. I have a Chevy pickup with 6.5 diesel which has a stock alternator driven tach. To have the tach in my pickup reading correctly the pulley on the alternator has to be sized properly to match the damper pulley size. I haven't taken the time to try to figure out any specifics on how to size the alternator pulley though.