crazymikey
+1y
i had a similar problem. my truck smoked like mad,so we figured bad valve seals,so I had the head rebuilt. We put it back together,fired the truck up and it still smoked like mad. We tore down the bottom end and discovered a very,tiny crack in the oil ring in the #3 cylinder. Funny part was,the truck ran just fine,and very smooth,but it just smoked like mad until it had warmed up to normal temperature.
Tearing your engine down is probably the last thing you want to do,but it might be worth it. How many miles are on the truck? Mine only had 80k miles on it when I had it rebuilt.