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Stewart Warner Tach. Accuracy? Stewart Warner Tach. Accuracy?
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Old 05-28-2012, 09:35 AM
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Default Stewart Warner Tach. Accuracy?
I question the accuracy of my SW tach. Any good way to check? Anybody else's experience?
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“If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower.”

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Old 05-28-2012, 12:30 PM
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i'm not sure mine is accurate either but most of the time it really doesn't matter to me.
i have a 6800 rpm pill in my msd so i don't over rev, and a shift light pill of 6300 to shift by when i'm pushin it.....half the time i'm too busy keeping it straight and driving to even look at the tach....
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Old 05-28-2012, 04:18 PM
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TRY THIS
Amazon.com: Customer Reviews: Neiko 20713A Professional Digital Laser Photo Non-Contact Tachometer with Accuracy 99,999 RPM Measurement

worked for me and doesnt break the bank
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