Offenhauser 4 barrel with what carb?

thanks, that is great info
what elevation are you at?....mile high here

The settings are for Detroit, MI, 581 above sea level.

xLURKxDOGx : Good luck with the carb. It has an air valve secondary, so bog should be minimal if it's set up right. Although advice on this forum has been generally good, IMO, it's hard to beat competent local support.