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Changing outdrive's with a overall gear ratio of 1.68:1, to one with a 1.86:1 ratio, how much of a prop diameter and/or pitch change should I have to make.
The boat is a omc sunbird 175 Corsica with a 4.3l 2 barrel carb.
I have a 1990 omc sunbird with a 4.3L v-6 with a bad lower unit. I came across a good used omc lower unit from a 1994 4 winns with a 3.0L 4 cyl. looking for any help or suggestions if I will run into any problems.I understand there is gear ratio difference, the 3.0L has a 1.71:1 ratio and the...
