I have heard that it is a good gain to put the 70hp lower unit gears of 2.3:1 to replace the lower unit gears of the 90hp lower unit gears 2:1. I have a 1998 70hp that i have replaced with a 2003 90hp TLDI. I am keeping the 90 but if the lower unit gears of the 70 is a good upgrade i would like to swap them before i sell the 70. Can anyone confirm this and what is the best way to go about this?
I have both lower units dropped and the 90 has a larger driveshaft. is there a way to just swap driveshafts?
I have both lower units dropped and the 90 has a larger driveshaft. is there a way to just swap driveshafts?