Gearing ?

Why fight the big compromise of highway or trap speed at track. Gear it for highway speed at rpm that you want with a bigger diam street tire. Then take it to strip & find what it will run. Then get a smaller diam tire that will get you your rpm at finish line. I have a duster with 408, 727, and 3.55 gears. With a 27.5" diam street tire it is fine on highway. When started at 1/8 mile track, I put on 26" MT drag radials that are 12" wide. Rear gear is not ideal for 1/8 as I can go thru trap at 6200 in 2nd or shift to 3rd before finish. Personaly I prefer to shift to 3rd and save the revs. When I went to 1/4 mile track, BINGO it was perfect for that combo. I finish at my shift point of 5900 rpm at 111-112 mph. Regardless of your mph, tire size, rpm: the whole thing is consistency for racing. Otherwise you are just chasing a fictional number for bragging.