Gearing ?

I did 13.92 at 98.**mph, 318, 3.55 gears, 225/70x14 tires, 65 Barracuda, after that run tried to tune it up to go faster......went slower!! Never did any further development on THAT combination.......different 318(sorta) went 12.54 @ 107.61mph, 4.88 gears, M/T 275/60x15 drag radials.

I don't think your idea of using your 904 as a 2 spd is gonna make it..........I tried it once in the 1/8th and hit the rev limiter at 7000 in second