Quote Originally Posted by DennyW
That's pretty much it Tango, but when he shuts the car off, and it sits, any oil that can run down the guides, it will run down which ever guide it can, exhaust or intake. That's why with worn guides, when you start it, you get the cloud of smoke, and then it goes away.

ps: It sounds like he has a not so good a set of new heads to me.
On a worn out older engine yes not on a new set of heads . Get rid of that PCV valve first . And a little smoke on start up on a race engine is normal . Carefully push the seals back down and run a slightly hotter plug . Make some more passes with this car then see how it is .