Does anyone know what the mixture settings for this aircraft is? How hot do you set the ** or EGT for performance and economy?

This article references 100 degrees Rich of Peak EGT for best performance and Peak EGT for best economy: http://americanaviationinc.com/effectsCessna.html Can anyone confirm this?

I recently bought an "owner's manual" for a 1974 Cessna 340, which is the year this plane is modelled after. You can pick one up here if you like: http://www.aircraftmanuals.aero/list/showDetail.asp?mID=4268 This manual states that the best power setting is 150^o​ rich of Peak EGT and the recommended lean is 50^o rich of peak EGD. The best power setting gives you an increase of 2 ktas.