gas engine replacement

[ynot]

hello boaters
400 sb gas engine big block mercruisers replacement any comments or experience in that situations
many thx

 

[CaptRonn]

Mine has Mercruiser 8.1's which replaced the old 454's. I have a 99 400SB.

 

[Thornton69]

Are you replacing bb's with sb's?

 

[Espos4]

hello boaters
400 sb gas engine big block mercruisers replacement any comments or experience in that situations
many thx

I think the “sb” is confusing people.

Your Sedan Bridge is a “DB”