Preheat oven to 325.Lightly grease two 8×4 inch loaf pans.
In a medium bowl, combine cream cheese, 1/2 cup sugar, 1 tablespoon flour, 1 egg, and orange zest.Beat until smooth.Set aside.
Sift together 1 2/3 c flour, baking soda, salt, cinnamon, cloves, and pumpkin pie spice.Set aside.
Place pumpkin, vegetable oil, 2 eggs, and 1 1/2 cup sugar in a large bowl and beat well.Stir the pumpkin mixture into the flour mixture just until combined.Fold in the pecans if desired (the recipe did not list how many pecans).Pour half of the pumpkin layer into the loaf pans.Spoon cream cheese mixture on top of this layer and then pour on the remaining batter.
Bake in a preheated oven for 60 to 70 minutes, or until a toothpick inserted into the center of the loaf comes out clean.Cool bread in pans for 10 minutes before removing to a wire rack to cool completely.
