I have a 1986 27 Tournament. With twin Merc 250 efi's, she hits 52-54mph at 5700 rpms (WOT). At around 3100 rpms...I think I do around 30mph.
The boat is a heavy battle wagon but there is a guy on the Cape (Joe Fitzback) who has a 27 with a single 300hp ETEC. I do not know the performance but KernelTugBoat is friends with him and can probably get the details.
Based on BigShrimpin's feedback of a single Merc 150 3.0L foustroke on his 23, I considered buying twin Merc 150's for my 27, but I don't want to be a guinea pig and potentially make a $25,000 mistake.
I do know that there is a Conch 27 for sale with Twin Merc 150 3.0L foustrokes and the owner swears by them.
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