Beat sugar and shortening at medium speed with an electric mixer until creamy. Add eggs and pumpkin, beating until blended. Combine flour and next 8 ingredients; gradually add to pumpkin mixture, beating until blended. Stir in pecans. Pour into a greased and floured 10-inch tube pan.
Bake at 350° for 10 minutes. Reduce temperature to 300°; bake 1 hour and 20 minutes.