Thunderbird at Lake Tahoe.m4v - YouTube
I don't know maybe Allison V12's for a boat?
Their was one in the Thimble Islands with triples that's now re-powered with Cat diesels. Right after the war the owner put in triple LM2500 Packard V12's because he wanted his milk to be extra fresh every morning!
It might have burned 300GPH+ but it got him his milk super fast...