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    Mercruiser 255 newbie

    I just bought a 1977 Gibson 36. The engine says 255 hp on one of the valve covers. It seems like everything I search on 255 hp brings up hits on Mercruiser. I am trying to identify the engine and the outdrive so I can learn more about what I have. I thought the 255 would help identify the make...
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    MerCruiser II TR Model A Transmission w/ Electric Shift will not shift.

    74 Gibson houseboat 255hp Just bought this 77 Gibson houseboat with a 255hp motor. drove couple miles and then trans popped out of gear (or something) but we were unable to get forward or reverse. Boat had trans rebuilt last year and been out recently. I am a mechanic but I don't know anything...
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