I'm running 550hp with a 25pitch prop. I never baby anything and my old bravo 1 has 850 hours and never been touched. When she blows I'll fix it its a boat somethings gonna need work.

Wait till later this year for Konrads new shiftable drive. It should be a whole lot more reliable than any Bravo.

Doc John here runs 720hp thru Bravo Ones on boxes...on a cat however (33 Eliminator) and he is very careful, he has not blowed one up yet.

Runs easily 110 maybe a tad more , 1.36 ratio... Here it is and one waxing me...And his mills 600ci's

I ran over 600, with a 4 blade, had to rebuild the top end with straight cut gears and hardened shaft

The Bravo one is the weekest of all. I would suggest before you break a gear and destroy the housing, Merc has an upgrade kit for the bravo one. Same style upper gear except it has the improved floor that the XR uses. I raced on them for 12 races 740 hp on a 28 inch wheel. Has to be a better forging, they hold up very well. In the lower the verticle shaft is the week link. There are many options for this shaft and the prop shaft. I can give you part numbers if you want Smitty

Smitty, part #'s and cost would be appreciated, I am also looking to upgrade my existing Bravo 1's. 600hp, 30" prop on 38' scarab.

Call Aaron or Jason at Max Machine Worx 928-505-7860 They are going to be at the Miami Boat Show in the Doller Offshore booth.