got a 67 with a 327 cant get ridd of the crankcase pressure. got the pvc valve, and valve breather, but still a lot of pressure[:@]

 

The 67 has a special breather arrangement that goes into the block behind the intake manifold. Do you have that, or a valve cover breather?
What port do you have the other end of the PCV hose attached to?
Is your engine using/burning/drinking oil? Your piston rings could be shot, allowing too much pressure to get down into the crankcase.

 

Most likely the piston ring are worn out.

 

got valve breather, but behind the intake that hole is pluged off, anddrinking oil

 

Crankcase pressure is exactly what it is, blow-by the rings. When the rings or cylinders are worn, you get blow-by. Which, in turn, causes crankcase pressure. Face it man there is no easy way ouy...RE-RING your engine. And you need to replace yyour downdraft tube.

 

x2...i agree