On Dec 1, 2014, at 7:24 PM, Charlie via VirtualVairs <virtualvairs at corvair.org> wrote: > Knowing my speeds in gears, how can I calculate my gear ratios? Here are the available ratios I've gleaned from several VV'ers, both factory and various tuner modified, it might help you: http://autoxer.skiblack.com/rpm_drop.html --Bryan