De Tom,
How much money you willing to spend?...I'd really like to go with titanium valves and retainers...but that would probably ad a few grand to the price, plus not sure about longevity of those valves.
I recall that Manly has some sodium filled and hollow stem Stainless valves that would lower the weight a bit also. I don't plan on going much above 6000r's so what I'm doing is fine. I should be able to get away with a 150 pound closed seat pressure and 350 open. My cam will be under .600 lift....a nice street motor that hopefully should live a good, long, tormented life.
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