The Stovebolt Site Forums The Shop Area The Electrical Bay 1964 chevy truck factory tach msd compatable?

IS the dizzy a points triggered or magnetic sensor (hall effect)? If I remember right (rare occurance more & more tho) the older tachometers needed the solid hit from a points trigger to run correctly, whereas the hall effect signals are much weaker & lower voltage, not a good thing for the old tachs.

I'd hit up a couple of the companies that rebuild old stock gauges & ask them about having the guts converted to a modern solid state setup that can use the low voltage signal. That or try to find another stock tach, buy a new tach, & see what you can hammer together yourself. Takes some creativity, but can be done.