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    Engine swap gearing and prop

    I have a 16 ft 1974 monte carlo with the mercruiser 165 4.1L straight 6 with 1.65:1 gear ratio and we are putting a sbc 350 in it. It will be for tubing and speed. What prop and gear ratio do i need? Thanks, Nick
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    new battery

    Im going to get a new battery for my boat. I don't have a trolling motor so why do I need a marine battery. All it would be used for is the engine, lights, a fish finder/depth finder, and maybe a radio
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    trim pump issue

    When i push the buttons for the trim it doesnt click or do anything so i had a jumper wire on the positive terminal and on another terminal and it only clicked and i hooked it up to a different terminal and it didnt do anything so what should i do?
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    what outdrive do i have?

    I have a mercruiser 165 l6 with an outdrive that has the serial # 3391591....what outdrive do i have?
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    do i need a thermostat

    Do i really need a thermostat for a mercruiser 165 6 cyl engine
  6. N

    wiring diagram for mercruiser 165 with transistorized voltage regulator?

    Is there a wiring diagram for the mercruiser 165 with a transistorized voltage regulator?
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