Smoking 318 need some ideas why?

Bad Sport said

An old boy once told me that if it smokes going uphill it's rings, smokes going down hill, valve seals.

I would also think about oil being sucked in around the intake gaskets, they could be dried out some.

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Excelent info on the intake as well, cause most people don't even think about that.
I have actually experienced that one myself, and it was surprising how little oil to took to make the car smoke like a pig.
I have heard some pretty good things about the seafoam product clearing gummed up issues too.