Combine all ingredients except chocolate syrup in large mixer bowl; blend well. Beat at medium speed for two minutes. Pour 1/3 of batter into a separate bowl and stir in chocolate syrup. Spoon batters alternately into greased and floured 10-inch tube pan. Zigzag spatula through batter to marble.

Bake at 350 degrees for 50 minutes, or until center springs back when lightly touched.

Cool 15 minutes before removing from pan.