Add eggs, one at a time, beating well after each addition.
Stir in sour cream
Add dry ingredients 1/2 cup at a time, beating constantly
Pour into prepared pan. Bake 1 1/2 hours in 325 oven or until done.
Place pan on rack to cool 5 minutes. Loosen cake around edge of pan and edge of tube with dull side of knife. Press toward pan rather than toward cake. This protects crust. Turn cake onto rack to cool immediately.