Add the beans to a 7-quart (6.5-liter) slow cooker along with 8 cups of water. The water should cover the beans by about 1 inch (2.5 cm). Set the slow cooker to high.
Add the salt pork, bacon, garlic, salt, and pepper to the beans, and stir. Cover the slow cooker, and let cook for 1 hour.
At the 1-hour mark, uncover and stir. Cover again, and cook for 1 more hour.
Check at the 2-hour mark. The beans should be fully plump at this point, and the water should still be above the beans. If not, add more water to cover. Cover and cook for 1 more hour.
At the 3-hour mark, check for bean tenderness. Taste and adjust the salt if needed. If the beans aren't fully cooked, cook for 1 more hour. Slow cookers are all different. Toss it in the instant pot for 5 minutes and natural release 10 minutes if they’re still not ready.
Turn off the heat, and let cool for 10 minutes before serving.
