Beat 3 eggs and add 2 cups sugar (or less).
Add slowly 1 cup oil. Mix well.
Add 2 cups peeled and grated zucchini and 3 tsp vanilla.
Sift and add 3 cups flour, 1 tsp salt, 1 tsp soda, 1/4 tsp baking powder, 2 tsp cinnamon (or 1 tsp cinnamon, 1 tsp ginger, and 1 tsp cloves instead of 2 tsp cinnamon).
Add 1/2 cup chopped nuts. (optional)
Pour into two regular-sized loaf pans. Bake 350 degrees for 1 hour.