Cream softened butter and 3 cups sugar together. Add 5 eggs, cream together. Add 1 cup cake flour, cream until smooth. Add 2 cups cake flour, cream until smooth. Add 1/2 cup 7-Up, cream. Add lemon and vanilla flavoring (butter flavoring optional) and cream until smooth.

Grease and flour Bundt or tube pan. Pour mixture and bake at 350°F for 1 hour and 15 minutes. Cake is done when toothpick inserted in middle comes out clean. Cool and then invert onto serving plate.