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-   -   427 SBC serpentine system (https://www.offshoreonly.com/forums/restorations-upgrades/386531-427-sbc-serpentine-system.html)

OGHallett 09-25-2025 04:42 PM

427 SBC serpentine system
 
I am in the process of renovating my families 1979 Hallett Mini Day Cruiser with a new engine and stern drive. It currently has the original Mercruiser 5.7 260 with the gen 1 Alpha sterndrive. I have a new 427SBC being built which should be good for about 530hp/550tq. I am also replacing the Alpha system with a Bravo HP transom assembly and a Bravo 1XZ sterndrive. I now need to add a raw water pump to the front of the engine since the Bravo sterndrive doesn't have an internal pump. I have played with the idea of buying the whole serpentine system off the front end of a newer Mercruiser engine and installing it on the my new engine (mounting brackets, alternator, PS pump, raw water pump, etc). But... I don't know if this is even possible. What would be my best option here?

SB 09-25-2025 06:13 PM

Not much help from me, but there are tons of small block w/bravo drives built by Merc.

350mpi’s are one that ring a bell for me and they had serpentine belt drives.

OGHallett 10-01-2025 10:05 AM

Thanks SB. I started calling around to see what 350MPI parts might work.

OGHallett 10-07-2025 02:27 PM

I have pulled the engine and am working towards removing the Alpha transom assembly. I am a bit stuck though. Can anyone tell me how to remove the steering cylinder?

https://cimg6.ibsrv.net/gimg/www.off...5080bd8c05.jpg


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