FWIW once you establish your shift speed, you may want to try changing RPM for just one gear. For example, you may be able to run the 2-3 shift out a bit more than the 1-2 shift. Or it could be the opposite. It's not always that the engine wants to be shifted at the same RPM at every shift change.
A couple of Stock Eliminator people I know shift their 1-2 200-300 RPM lower than their 2-3. Never tried it on my junk, simply cuz I position the tach "straight up" at the RPM where I shift for easy reference.
Also, I don't use a shift light any more; I was always late on the shift when waiting for the light at the specified RPM. I'm more consistent w/ the approach above.
Regardless, I was never aware of any major shift lag time that caused my actual shifts' RPMs to be so much higher like some of you said. I'd like some type of data logger or playback tach to see what's happening across the whole pass, though.
