Quote:
Cab_Burge,
Super unleaded is the fuel I use so I expect it to have 8-10% ethanol.
Since my high-vacuum cruise is in the 13's, doesn't that mean I need less fuel and not more? Moving to the .107 on the primaries should thin that out a little and as you say I can always go with a smaller rod if it gets too thin.
I would try leaning it down also  Fatter is safer so do the safe tuning first, then creep up on the best fuel economy tune  BTW, what brand and heat range spark plug and ignition timing are you using now?
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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