ID Cylinder Heads

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  • HARRY D. NICHOLSON

    US Member - 2 Years
    Replies: 158
    Topics: 13
    #286467

    What do these heads fit ? Bore seems to be 2 1/4″, casting is 7″ tall, spark plugs are approx 2 11/16″ apart on centers. They appear to be interchangeable though the combustion chambers are slightly different shape. The blue one has casting number 302770 and it is stamped 10 on the bottom edge. The greenish one has casting number 320495 and is stamped 15 on the bottom edge.005
    006
    014stamped10on-bottomEdgeBlueHead


    Michael

    International Member - 1 Year (includes $3 online payment fee)
    Replies: 79
    Topics: 10
    #286472

    Look like early OMC  9.9 or 15hp heads from the 70’s and early 80’s

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