Preheat the oven to 375 degrees F (190 degrees C). Grease a 9x5 inch loaf pan.
Place raisins in a small bowl; cover with boiling water by 1 inch. Set aside until raisins are plump and rehydrated, 3 to 4 minutes; drain, reserving ⅓ cup soaking water in a separate bowl.
Combine whole wheat flour, all purpose flour, cinnamon, baking soda, baking powder, salt, cloves, and nutmeg in a large bowl. Combine pumpkin, sugar, eggs, reserved soaking water, and oil in a separate bowl; stir into flour mixture until just moistened. Fold in walnuts and raisins. Pour batter into the prepared loaf pan.
Bake in the preheated oven until a toothpick inserted into center comes out clean, 50 to 55 minutes. Cool in the pan for 15 minutes, then remove from the pan and transfer loaf to a wire rack to cool completely.
Whole Wheat Pumpkin Bread · Dinner Match Lab | Dinner Match Lab