What is the time and temp to cook a stuffed 4 lb pork loin roast without a meat thermometer?

To cook a stuffed 4 lb pork loin roast without a meat thermometer, preheat your oven to 350°F (175°C). Roast it for approximately 25 to 30 minutes per pound, which means you should cook it for about 1.5 to 2 hours. Ensure the juices run clear and the stuffing is hot throughout, indicating that it’s done. Let the roast rest for 10-15 minutes before slicing to allow the juices to redistribute.