thank bb for the info.... the car weighs 3000 with me in it... race ready.... the wallace couculater come up with these numbers.... car... 3000.... rpm...7200.....tire size....14-32...gear ratio.... 5:13.... et....11:72.and mph... 113... that is what the car run almost every time... i was told the wallace system is at the GROUND...NOT FLYWHEEL... the numbers i get show 367 hp at the ground.... maybe 100 shot of nitrous to get 10:90 ?????? thanks caveman :? :? :?