@Flatbush - I often make pound cakes in loaf pans rather than Bundt pans, especially when I halve a recipe. The key thing to keep in mind is matching the pans' volumes. Most Bundt pans hold between 9 and 14 cups of batter, which is far more than a loaf pan. Here's my handy-dandy list of standard loaf pan sizes with their volumes:
8 x 4 x 2.5" pan = 4 cups
8.5 x 4.5 x 2.5" pan = 6 cups
9 x 5 x 3" pan = 8 cups
Most of my pound cake recipes are designed for a 10-cup or larger Bundt pan, so half recipes work well in an 8.5 x 4.5 x 2.5" pan. If you want to make a full recipe, try using a loaf pan of your choice plus mini loaf pans or ramekins for the rest of the batter (or if your recipe is designed for a 12-cup Bundt, two 8.5 x 4.5 x 2.5" pans will work).
Happy baking! 