How long to smoke pork loin
Smoke pork loin at 250°F for about 30 to 40 minutes a pound, and pull at 145°F, or 140°F and let the rest carry it. That is for pork loin (boneless roast); the calculator above fits the time to your weight and your heat.
Rest 5 to 15 minutes before slicing or pulling. USDA counts pork loin safe at 145°F with a 3 minute rest; a thermometer in the thickest part tells you more than the clock.

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Questions
What temperature do you pull pork loin at?
145°F, or 140°F and let the rest carry it. Cook to that temperature rather than to the clock.
How long should pork loin rest?
5 to 15 minutes, loosely covered or wrapped, before slicing or pulling.
Should I cook to time or to temperature?
To temperature. The time tells you when to start and when to start checking; the meat is ready when the thickest part reaches its pull temperature.
Does my smoker change the time?
Not at the same temperature, as far as any cooker maker or test says. What changes is how steady it holds: keep the lid or door shut and the fire even, and the time holds too.




