Gearing and shifting 4 speed at the track

Then the RPM at crossing went down and you had too much gear to begin with. It's a math calculation. Stroke length has nothing to do with it. It's RPM, tire diameter and gear ratio.
I shifted that 360 at 5700 rpms, and I didn't reach 5700 rpms with the 3.91's crossing the lines.
Here comes the disagrees, but sometimes you have to let the torque "push you".