I got some edelbrock valve covers off jegs.
Covers each have one hole in them. Do I lose the PCV Valve or my oil cap?

Oh and the breather I got for the valve covers does not have the extra fitting for
the hose that goes to my air cleaner. But the air cleaner I just bought does not have the fitting either.
Thats only for heating up the engine during start up correct? Is it a big deal to run without?

 

The line going from the valve cover to the air cleaner is crankcase ventilation. It just makes sure that when pressure in the crankcase pushes out oil fumes, they get burnt in the engine instead of escaping and causing pollution. You can just put a standard little breather on the valve cover to vent to atmosphere. Its an emissions item, but won't affect how it runs.

I'm not so sure about the lack of holes.

 

Wontaccept this is right about the pcv, just put your breather in one of the valve covers, and your oil cap in the other and you will be fine