In a seperate bowl whisk together the flour, baking soda, baking powder, salt, and ground cinnamon.
In bowl of electric moxer, beat the eggs until frothy (about a minute). Gradually add the sugar and beat until the batter is thick and ligt colored ( about 3-4 minutes). Add the oil in a steady stream and then beat in the vanilla extract. Add the flour mixture and beat just until incorporated. Scrape down the sides of the bowl as needed. With a large rubber spatula fold in the grated carrots and choped nuts. Evenly divide the batter between the two prepared pans and bake 25 to 30 minutes or until a toothpick inserted in the center comes out clean.