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  1. Barney555

    1979 3.0 140 mercruiser engine swap to 1988 3.0 engine

    that looks just like mine, except bell/gimbal housing has trim senders and switch on sides. Mine does not. Looks nice and clean, How is it working for you?
  2. Barney555

    1979 3.0 140 mercruiser engine swap to 1988 3.0 engine

    Thanks, good point. Checking transom from inside, and there's some rot where water drains to bilge, but around transom assembly seems solid. I will do a full inspection and repair what's needed.
  3. Barney555

    1979 3.0 140 mercruiser engine swap to 1988 3.0 engine

    thanks for all your input! this really helps. I was thinking about swapping transom assembly to alpha might make more sense. If I go that route, would the older MC1 outdrive bolt up to it for now and I could upgrade that later on, or would I need a new alpha 1 drive as well? Thanks again!
  4. Barney555

    1979 3.0 140 mercruiser engine swap to 1988 3.0 engine

    1979 Mercruiser MC1 3.0 140 engine (needs full rebuild) Also MC1 outdrive seems ok( new impeller and oil) Can I drop in a 1988 3.0 130 mercruiser, and make it work with existing transom assembly? From what I can tell, my issues will include: motor mounts are wider on MC1 transom plate exhaust...
  5. Barney555

    hi all, first post here, have an older mercruiser 3.0 140. I believe it's 1979 so that would...

    hi all, first post here, have an older mercruiser 3.0 140. I believe it's 1979 so that would make it an MC1. engine has the older style square manifold riser (4 bolts) and shifter assembly is mounted on transom behind engine. Engine mounts on transom plate are wider than later 80s motors...
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