Preheat oven to 350 degrees.
Stir flour, baking soda, salt, and cinnamon together.
In a separate bowl, beat eggs until lemon colored. Add oil slowly to the eggs. Add sugar, vanilla, and grated zucchini to the egg mixture. Mix well.
Stir the dry ingredients into the egg mixture.
Pour into a lightly greased loaf pan.
Bake for 60 minutes, or until done.