I take it thi8s particular engine package launches above normal idle RPM's, as in foot to the floor, against the rev limiter. If that is the case, it should already be at top advance, and retard as RPM's are increased, changing with the load changing.
If this engine launches from an idle, like a Top Fueler, the timing is already fully locked out, and at the detonation point, which would not tolerate any further advance @ launch.
I started a timing topic last year, and promptly got so busy with my engine development work, I didn't get a chance to participate, let alone contribute, but, it all has to do with the time involved to get the burn fully across the top of the piston, making the burn push pressure against the piston top as advantageous as possible, without causing detonation, and/or other burn issues. Some of you have bits and pieces of how this all works right, you all need to get back with it and go forward, so everybody understands, and gets involved with it. One thing to realize is, it takes time, in burning the mixture, to get that full burn across the entire top of the piston, to get the most push to the piston for peak power production.