When preparing a 7-pound pork roast in a slow cooker, it takes approximately 7 to 8 hours to cook on a high temperature setting and 9 to 10 hours on a low setting. Actual cooking times may vary depending on the actual cut of meat and added ingredients.
Cook pork roasts to a minimum internal temperature of 145 F for safety. To check the temperature, insert a meat thermometer into the thickest part of the roast. When making a roast for pulled pork, Farmland Foods recommends cooking the roast to an internal temperature of 190 F. Add 1 to 2 cups of water, broth or wine to the roast during cooking to enhance the flavor and keep the meat tender.