Re: 396/375 cam for street 454?
With the 396 it is a good idea to add the flow notches in the tops of the bores as well for better air flow. Without using a flow bench, any grinding in the ports can just as easily hurt the air flow numbers as increase them.
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Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now. 
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