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    470 Spark Plugs

    The original manual for my 83 470 lists only two spark plugs that could be used. AC-Delco and Champion. Is there an NGK plug I can use for this engine. I think this might be a better plug. If not, which of the other two are better. Hmmm, I wonder how many will agree on this one?
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    Mercruiser 470 tune up

    I am doing a tune up on my 83 470 Mercruiser. I will be using a dwell meter. I'm trying to understand the relationship between the gap and the dwell. If the dwell reads less than what it should be, should I apply more or less gap. And if the dwell reads more than what it should be, should I...
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    Mercruiser 470 engine shake

    I just installed an alternator conversion kit from Breezeworks on my 1983 Mercruiser 470. I also did an ignition tune up with new wires, plugs, coil, and distributor cap with rotor. When I first started up the engine, I felt like there was more engine shake than normal. After the engine ran a...
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