Preheat oven to 325°. Coat a 10-cup Bundt pan with cooking-oil spray. In a large bowl with a mixer on medium speed, beat butter and granulated sugar until fluffy. Beat in eggs.
Whirl orange chunks in a food processor until mostly smooth but not puréed. Add 1 1/2 cups orange mixture to batter and beat until blended. Add flour, salt, baking soda, and baking powder to bowl and beat until smooth. Spread batter in prepared pan.
Bake until a toothpick inserted in the center comes out with only a few crumbs clinging to it, about 55 minutes. Cool pan on a rack 10 minutes, then invert cake onto rack and let cool completely.
Whisk together powdered sugar and orange juice in a small bowl. Drizzle over cooled cake. Let glaze set, then slice cake.