Ok well I got no post on my last one but this is what happen I was replacing the plenum on my truck and shape a intake manfold bolt on the head so I took the heads off and sent them to a shop to get fixed up the shop said I had cracks in them I said ok. No problem I bought 2 rebuild heads and put everything back together with a new upper hose and t stat 185 and before you ask no it was not overheated I changed it to a 185 because I live in tx. 100 degree plus down here any ways thats not the problem the truck didnt smoke befor til I got the rebuild heads at start up it puffs out smoke I checked coolant and the oil level over and over it can't be a head gasket or rings. Right??? Any waysI hope to hear from some one ill be doing a ccompression check tomorrow. But im like 95% sure its the rebuild heads. And it does not matter at what temp cold or hot it will smoke if you let it sit for 20 mins. Like so here is the video Dodge form help: