5 Speed Gear ratio advice?

If your cam is slated to "Cruise" @ 3000 rpm and the overdrive drops the rpm's down to 2200-2400, the efficiency of the engine drops.

This is where you tune your engine. In the area of cruising or where it is making the best torque for you to be cruising in. A lot of people have dismissed that fact.

If your running rich or lean at the cruise rpm (say 3000 rpm) while your going down the road, your giving up mileage.

It isn't necessarily the lowest gear ratio that will net the best mileage. That could be a miss match in itself.

A crazy example would be 2.45 gears, 32" tires and a huge race cam like a solid roller @ [email protected].