footbrake racers

I was leaving at about 2000,got consistant 1.70 60 ft times,had a friend drive the car and he left at about 1200,got a 1.67 60 ft.Every car is different and like different combos.My un-sure grip wasnt gripping,and tranny was acting up,shifted at 5800 and saw tach go to 6600.Both out now and being fixed.This is a slant 6 car that wants a 7 in the 1/8th.197 rwhp,Guzzi Mark