The reason behind my desire to get a tighter ratio is that 1) I am, as mentioned, young and strong, which leads me to 2) I only use half of my current ratio regardless of where I am. I typically ride one solid gear unless I encounter a steep hill, and even then I only ride on the next highest gear. I can't tell you the ratio on my current freewheel; all I can say is that it is definitely the original stuck on my '74 Grand Prix when it rolled out of the factory.