Car smoking bad when running hard

[David Gordon]

When I get on the gas in my 89 TTA it smokes and seems to be leaking oil fron the top of the engine. We changed the intake gasket and the valve cover gaskets, still the same. I think it is coming from up high due to smoke coming in the cabin from the steering area.
Also it is pouring smoke out back. It is not coming out of the exhast it seems like oil getting on the exhast. Anyone got any ideas?

 

[PhillyTurboSix]

check the oil pan gasket. The one on my GN was rubber (first mistake) and it snuck out the back just enough so when I got on it, the oil would go to the back of the pan and run out the back of the pan and right on the crossover pipe and make some nasty smoke and smell. The cross over pipe almost hides it. But all the gasket needs to do is sneak out a tiny bit in the back and oil all over.
I know you think it's up high but I bet it's the oil pan gasket