With a stock cam and valvetrain, there's no reason for you to spin over 6 grand, Nate. The power peak for a stock car is 5200rpm, so figure 5-800 rpm beyond that is all you need to go.
With my old setup, even though the valvetrain was stable up to 7 grand, the power peak was at 6000rpm so there was no reason for me to spin past 6500; that's where I had my rev limiter set.
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