Re: Valves
There is quite a range of Chevy valves. From budget replacement to Serve Duty. The price goes up accordingly. I'd try to find ones with undercut stems under the head to give you maximum flow.
If you really want to get slick, have someone taper and install bronze inserts into the valve guides to also improve flow into the port. Inserts just improve wear and help to prevent sticking valves.
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