I looked it up and the avg human reaction time is .25 visually.
I've tested to an average of .16, maybe that's why I can go red on a .400 tree with my Turbo Action tranz brake valve bodied 904. A lot of people told me it wouldn't do it.
No doubt there are people with way fast reaction times... .250 was the average number I found when I looked it up.
As far as the birdman discussion goes. I believe I heard the # 4000hp mentioned is what the hemi makes.
Ryan is close to 4500hp. Birdman is past that and has a lighter car.