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  1. W

    5.0 merCruiser swap

    If I do want to buy a different lower unit, what do you recommend?
  2. W

    5.0 merCruiser swap

    The prop says 14 1/4 x 21
  3. W

    5.0 merCruiser swap

    can you just change gear ratio in lower unit? Or do you have to change prop?
  4. W

    5.0 merCruiser swap

    I have a 17ft 1994 Larson that had a 4.3 merCruiser in it. I had to swap it out with a 5.0 merCruiser but kept the same 4.3 alpha one out drive. The boat runs good but won’t go over 30mph and the rpm gage is reading 5500 rpm at full throttle. Any idea what’s going on?
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