what pounds should I tourque the prop nut on a Bravo dirve

The manual says minimum 55 ft-lbs. Given the size of the shaft, I would think that 75 ft-lbs would be okay, but I wouldn't want to go any higher. Right hand turn drive will tend to loosen the prop nut, so it is a good idea to check the torque periodically and to replace the nylock propshaft nut if it is loosening up. The nylock part will wear out over time.

Garrett

Solid hub at 70#
Plastic hub at 35#

I just got my new B1 prop with Flo torque hub. Directions say 55#.