Bravo 3

Old 05-03-2021, 02:14 PM
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Thumbs up Bravo 3

I am new to working on boats. I recently bought a boat that needed a new out drive. It is a bravo 3 that needs to be fixed. I think someone has replaced this before. My question is can bravo outdrive upper and lower be swapped ? For instance using a Bravo 1 upper on a bravo 3 lower. And for some reason I think this outdrive is a 2.43 gear ratio in a small light boat with 24" props. It has a strong running 350. I am trying to get the drive prop combo to cruise at around 3000 rpm to 3500 rpm. Any information would be gr8.
ShaneA55 is offline  
Old 05-03-2021, 04:41 PM
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Yes uppers and lowers can be swapped with limitations. The older drives can only do it with certain models. See pic

Also need to pay attention to the gear ratios

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Old 05-03-2021, 05:54 PM
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youll need a 1.65 bravo one upper
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Old 05-03-2021, 11:31 PM
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On a small, light boat 24 pitch props and 2.43 gears doesn’t add up,
2:1 is a popular gear for a b3 and you’ll see them run 28 pitch props
on boats as you describe

If it has 24 pitch props, I’m guessing it has 1.81 final gearing
( 27/29 tooth count, the same as a 1.36 B1)
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