skipjobe Posted June 21, 2008 Share Posted June 21, 2008 260 with 350 sbc Factory Tach is hooked up wrong, it goes up and down 4000 to zero with no relation to rpm. I think I read that there is something on the tach that can be adjusted to calibrate it. How do I do that and how difficult is it to remove the dash? Quote Link to comment Share on other sites More sharing options...
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