Kickdown band lever ratios

^^right^^

There's so many ratios because there are so many different style of vehicles. A trans made for a Chrysler New Yorker will be programmed for a soft cushy shift. A trans. for a RV or heavy service vehicle will be programmed for a real firm shift. Then there's everything in between.

BTW: as far as I know the only time a 5.0 lever was used on a production vehicle was in a Hemi application. It really shouldn't be used in any trans. except the Hemi trans because the Hemi trans had a 1/2 wider front band than all the rest and it needed more leverage to clamp it down. Most of the time a 5.0 lever will cause 2-3 shift overlap in a average 727. I don't even like using 4.2 levers any more cause of overlap problems. When you have a good shift kit there's really never a need for a ratio higher than 3.8 IMO. The only exception to that are aftermarket manual valve bodies that specify using a 4.2 or 5.0 lever