My suggestion is to put the pcv valve in the right valve cover. Connect it to the back of the Holley. Put a clear in line "fuel filter" in line so you can see if it is siphoning oil through it.
You could also in leu of that plumb the line through an oil separator, then to the Holley. Here is a picture of the one I am going to use.
The "oil filler baffle" inside of the valve cover should be in place also. That reduces the splashing that the rocker arms throw against that area of the roof of the cover. It is a substantial amount.
Some of those "Detomaso" valve covers have been stripped internally of the baffles.
They were also originally intended for the Boss 302 and had internal drip fingers located directly over the rocker arms.
The original engineering on the car indicated they were necessary to aid in lubricating the rocker arms. I wonder how significant that is when I hear of "roller" rocker arm failures?
I'm using these. They are chromed billet aluminum. They are inexpensive and very compact and fit a Pantera pretty well or more precisely it is pretty easy to find a place to put them.
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