Cream butter and sugar together for 5 minutes. Add eggs, one at a time, beating thoroughly after each addition. Add sifted flour and lemon extract. (batter will be very thick) Fold in 7-up slowly. Pour batter into WELL GREASED 12 cup Bundt pan or tube pan. Bake at 325 ? for 1 to 1 ? hours. For glaze: combine confectioners sugar, lemon juice and lemon extract. When cake is cooled, drizzle with Lemon Glaze