Preheat oven to 350 degrees.
3 cup flour, 1 tsp. cinnamon, 1 tsp. cloves, 1 tsp. nutmeg, 1 tsp. pumpkin pie spice, 1/2 tsp. baking soda, 1 cup vegetable oil, 2 cups sugar, 3 eggs, 1 can pumpkin puree (16 oz), 1 cup chopped walnuts, 1 tsp. vanilla.
Sift together the dry ingredients. Mix together oil, sugar, eggs and vanilla. Add the pumpkin and mix well. Add to dry ingredients and continue mixing until batter is thoroughly mixed with the dry ingredients. Add nuts and pur into two 9×5 greased and floured loaf pans. Bake in oven for one hour or until an inserted toothpick comes out clean. Let cool until warm. Serve warm or cold. Yum!