Originally Posted by Waveski
The passenger side valve cover has a breather hole. It gets plumbed to the base of the carburetor.

Nope- - - -that will create a massive vacuum leak and the engine won't idle. The beer can shaped device at the back of the valve valley connects to the cone shaped fixture beside the distributor, which is connected to the manifold with a PCV valve with hose nipples on it inline. The grommet in the valve cover needs to have a breather cap plugged into it, with either a filter or a hose nipple that connects to the "clean" side of the air filter. That's also the oil fill by pulling the breather cap out of the grommet. The device back by the distributor was where the road draft tube attached on older SBC engines.
Jerry

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