13/40 and 22s is 7.16 ratio, Stock gearing and 62 MPH.
12/40 and 22s is 6.60 ratio, Motor will be very torquey but lose top end.
12/40 and 20s is 6.00 ratio, First gear will be useless, and you'll run though the gears way to fast.
13/40 and 20s is 6.51 ratio, Same as 12/40 and 22s.
13/39 and 20s is 6.66 ratio, almost same as above.
14/40 and 20s is 7.01 ratio, Better but not close enough to stock.
14/38 and 20s is 7.38 ratio, pretty good all around ratio.
14/39 and 20s is 7.19 ratio, Almost perfect to stock gearing.
15/40 and 22s is 8.27 ratio, getting way out of the warriors torque range
15/40 and 20s is 7.51 ratio, Too high for stock motor will be sluggish.
15/38 and 20s is 7.90 ratio, Good for a 446 motor top speed over 80.
16/40 and 20s is 8.00 ratio Good combo for stroker motor.
13/40 and 18s is 5.86 ratio, Top speed will be like 40 MPH screeming.
14/40 and 18s is 6.31 ratio, Same as 12/40 with 20s.
14/38 and 18s is 6.47 ratio, Same as above.
15/38 and 18s is 7.11 ratio, Almost perfect to stock gearing.
16/38 and 18s is 7.59 ratio, Good if your motor can handle it, top speed will be in the mid 70s.