Yes the higher ratio number the tighter the 1-2 shift and I have installed Trans-go TF-2 kits in transmissions with a 2.9 lever and the 1-2 shift was solid even with a 350'ish hp engine. I have also found that if you run a 5.0 lever in a 727 with a stock type VB you can experience 2-3 shift overlap so for that reason I use a 3.8 or 4.2 lever, depending on what style front band I use, when building a HP 727. The 904's I've done seem to shift ok with a 5.0 lever. They operate the same way but 727's seem to overlap on the 2-3 shift a little worse. Not exactly sure why but my theory is that there's more area in the larger front drum of a 727 and it applies a little quicker and more solid. Again, that's just my guess
