Chain and sprocket combo questions.

[elwood]

Yes, but what i'm saying is if the tire height stays the same, but final GEAR ratio changes (lets say reduce the front sprocket tooth count only), the ratio will get larger (bigger #), not smaller like the chart shows.

I still don't know how to figure how the chart comes up with a "ratio" by using rear tire height.
I ain't too good at that there math thing.

This is interesting though:
http://www.fullsizechevy.com/forum/...01-tire-size-reduction-final-drive-ratio.html

This one is pretty flexible with plugging in figures:
http://www.csgnetwork.com/multirpmtirecalc.html

your right, the higher the final gear ratio # the slower the top speed. The chart does say what will happen corectly but final ratio is backwards