My Favorite Zucchini Bread

3 cups flour
3 eggs
2 cups white sugar
1 cup oil
2 cups grated zucchini
1 cup chocolate chips (optional)
1 teaspoon cinnamon
1 teaspoon baking soda
1/4 teaspoon baking powder
1/2 cup sour cream

Preheat oven to 350 degrees. Grease 2 - 9x5 loaf pans. Beat together eggs, sugar, and oil. Blend in the zucchini and then the sour cream. Mix in the flour, baking powder, baking soda, and cinnamon. Stir in the chocolate chips. Pour the batter into the prepared pans. Bake 60 minutes. Cool on a wire rack.