In mixer, combine:
3 cups sugar
1 cup vegetable oil
1 2/3 cups pumpkin (one small can or your own cooked pumpkin)
4 eggs, beaten
In a medium bowl, combine:
3 1/2 cups flour
2 tsp baking soda
2 tsp salt
1 tsp baking powder
1 tsp cinnamon
1 tsp nutmeg
1 tsp allspice
1/2 tsp cloves
Alternate adding the dry ingredients and 2/3 cup water (1/3 cup if using fresh pumpkin) to the mixer until combined.
Grease and flour two 9" x 5" x 3" loaf pans. Divide the batter between the two pans and bake at 350 degrees for 45 minutes to an hour until top is firm.