
Preheat oven to 350°F. Grease two (9 x 5-inch) bread pans. In a large bowl combine sugar and butter. Beat together until creamy. Add eggs; mix well. Add sour cream, orange juice and orange zest; mix well. Add flour, baking powder and baking soda; mix well. Stir in nuts. Divide batter evenly among prepared pans. Bake 45 to 55 minutes. Cool on a wire rack for 10 minutes before removing.