Preheat oven to 350°F (175°C). Grease and flour a Bundt pan.

In a large bowl, mix together the flour, baking soda, cinnamon, salt, sugar, vegetable oil, eggs, and crushed pineapple.

Stir until well combined.

Add the chopped bananas, nuts, and raisins (if using).

Mix until evenly distributed.

Pour the batter into the prepared Bundt pan.

Bake for 1 hour and 5 minutes, or until a wooden skewer inserted into the center comes out clean.

Let the cake cool in the pan for 1 hour before inverting it onto a serving plate.

Slice and serve.