Grease TWO 9 1/2 x 5 1/4 inch loaf pans.
Sift together flour, baking powder, baking soda, salt and spices. Add the sugars, mixing well.
Mix dry ingredients with the oil and pumpkin, stirring until well combined.
Add eggs, one at a time, blending thoroughly.
Pour into 2 greased pans.
Bake at 350 degrees for 50 to 60 minutes. Wait 5 minutes then remove from pan and cool on rack.