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Old 03-08-2020, 09:31 AM   #20
tubman
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Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 10,260
Default Re: tach advice wanted

I don't believe that a 4K tach is adequate, unless you are the most gentle driver out there. 5K is more appropriate, and if you have modified your engine at all, 6K will be required. I have seen over 5000 RPM with my 258" engine several times.
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