Interesting. I'll check it with the dyno when the time comes. I've got a new Autometer tach. I also have a very old Sears multi-meter (the old ones with dwell, tach, etc). My tach and that gauge are the same.
50 year old factory tachs would be a different story!
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Adam
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1964 LeGTO
469, M21, 3.42
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Sold:
1968 Pontiac LeMans Convertible
See it go HERE
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