My 1948 I&T Shop Book says AC-75 with 7/8" thread, gap at .020". Conversion chart shows Champion 1 Com. Firestone S80 or SH80. But this book's data seems to cover only the 1937-1939 tractors with a 260 CID engine. From an alternate source, I find in a piston ring catalog the C has the same 3-7/8" bore 1929 - 1938. There is no C listed for 1928. Or 1939 either for that matter. If your Firestone number differs from the above, I may be able to translate to another brand for you. Jerry
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Today's Featured Article - Show Coverage: Godfrey, Illinois Country Days - by Cindy Ladage. Except for last fourth of July's Old Gold show in Springfield, Illinois, I don't remember when it was so hot. Nevertheless, the heat didn't keep vendors and visitors alike from enjoying the third annual Country Day's Event. Jane Elliott said the event was originally a one man show. "Barry Seiler, owner of Country Town Farm Supply store used to invite people up to the Johne Deere store. He would give hats and a free meal for everyone that brings a tractor." Elliott said while this
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