Can you measure the gear ratio on a bravo 1 by turning the input shaft and counting the Number of turns on the prop shaft like you can on a car rear. Thought maybe because of the cone clutch type drive it might not be accurate?????????????anybody.I'm trying to find out if I have 1.50 0r 1.37 gears in my buddys boat and the drives are on the boat in the lift. JOHN SR

Yes you can,
once it's in shifted into gear and you're turning the input shaft
the same direction as engine rotation (ccw) everything is hooked up.

Mr Gadgets told me how to check mine sorry cant tell you exactly what he told me to do it's been awile and a few beers ago, maybe pm him

Better to turn the prop shaft 10 times and count the input, then divide input/output. So 10 prop, 15 input = 1.5. 10 prop 13 1/2(about) input = 1.35

It's really hard to tell turning from the input end.