smokin?

Hey guys my car just got a rebuilt engine put into it and it runs good and all but it smokes kinda bad when u give it gas and even after u turn of the car it smokes from the exhaust pipes fro a minute, and it smells kind off bad to my buddy says its proboly just old fluids just burning up from sitting so long but i dont know..... any ideas

what old fluids if the engine was just rebuilt?

It's normal for an engine to smoke a bit during the break-in period. Keep a close eye on the oil level for the first few hundred miles. A way to seat the piston rings in is to accelerate hard to about 45 MPH, then coast it down to 20, then hard to 45, then coast to 20 - do this about 10 times. The hard acceleration forces the rings out into the cylinder bore, coasting down draws oil up through to keep them lubricated. Remember that oil change in the first 500 miles.