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What fuel? With open chamber x heads and 10:1 compression...... Uhhhhmmmm 375-400.
Didn't say what fuel, so I going with pump gas premium w/ octane booster to be sure. Fiddle with the cam intake and lobe center angles (degree cam), optimize ignition timing to the combo and make sure the EFFECTIVE cr IS 10 to 1, otherwise with the "advertised" cr level at 10 to 1, you are looking at 50-70hp less (maybe more!) than with EFFECTIVE cr. 
"Stupidity is Ignorance on Steroids"
"Yeah, it's hopped to over 160" (quote by Kowalski in the movie Vanishing Point 1970 - Cupid Productions)
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