My road race engine has 330 cfm Hi Ports, 10.5:1 compression and a 3/4 race (hahaha) SFT cam. On the dyno, it made best power at 36 degrees. We tried 37 deg and power was a bit less. That was on a 50/50 mix of VP 110 and 90 octane pump gas. I'm going to run it at 34 degrees for a long happy life.
FWIW,
Eric
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