How long to bake 8.5 lb pork butt and what temp?

To bake an 8.5 lb pork butt, preheat your oven to 225°F (107°C). Cook it for approximately 1.5 to 2 hours per pound, so expect a total cooking time of about 12 to 17 hours. It's important to use a meat thermometer to ensure the internal temperature reaches at least 195°F (90°C) for optimal tenderness. Let it rest for at least 30 minutes before slicing or shredding.