volvo 280 conversion to bravo 2

mr300z87

Senior Chief Petty Officer
Joined
Sep 15, 2010
Messages
694
Re: volvo 280 conversion to bravo 2

Just wanted to share so of my recent experiences. I have a 1989 21 ft cuddy cabin that the original owner (have paper work to confirm) insisted on a bravo drive which was in only its second year of production, and since the B1 was only available with behind a Big Block, my boat was equiped with a 5.7 L and a Bravo 2. The B2 was the only way to get a Bravo and a 5.7L, which my my opinion over powers my boat with in spec, and I am not complaining. I used to boat for most of last summer with the B2 with both the original 25P and a 23P props and it performed just fine in both cases. WOT RPMs with the 23 was better. Late in the season I swapped the B2 with a 1.5 ratio B1 and I felt it was a much better fit. Both to speed (although never really spent much time there) and WOT RPMs increased. I am no expert but the B2 will work but as stated above a B1 or B3 would be better. Both B2 and B3 props are big $$$$$
 

dreamchaser

Petty Officer 1st Class
Joined
Aug 31, 2006
Messages
228
Re: volvo 280 conversion to bravo 2

Hi all , Im wondering if i can remove bravo 2 "lower unit" and bolt on bravo 1 "lower unit"? doing so does that change gear ration? also will i have to replace the b block y pipe and change the b block bellhousing to a small block bellhousing thks Leo
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
70,994
Re: volvo 280 conversion to bravo 2

Hi all , Im wondering if i can remove bravo 2 "lower unit" and bolt on bravo 1 "lower unit"? doing so does that change gear ration? also will i have to replace the b block y pipe and change the b block bellhousing to a small block bellhousing thks Leo

Ayuh,.... The bellhousin' bolt pattern is the same,... All the Chevy blocks share the pattern,...
I think the y-pipe is too...

The gear ratio is changed in the Upper unit, which is interchangeable through All 3 Bravos...
 

dreamchaser

Petty Officer 1st Class
Joined
Aug 31, 2006
Messages
228
Re: volvo 280 conversion to bravo 2

ah!!!!!!! sweet now Iim getting somewhere.....thks Bond-o.. so,s now i need to figure on proper gear ratio for sbc and find a b1 lower
 

dreamchaser

Petty Officer 1st Class
Joined
Aug 31, 2006
Messages
228
Re: volvo 280 conversion to bravo 2

What do u think Don S, change all to mercruiser or keep it the same ? less the whole dimensions ? i know the hole cutout is different . 280 and the 290 dp , I have a line on a 1992 volvo 350 with a 290 dp setup appreciate ur thoughts thks Leo
 
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