Crankcase ventilation with blow through supercharger

I'll clear up what I can based on 25 years of ownership of a Procharged 408.

I run a crankcase evac kit from Speedway. I use Flowmaster and run the evac tubes right after the collector. The collector gets the best signal but I had just had my headers coated so I went a couple inches further down.

Evac kits will work with the Delta shape in the Flowmaster and similar. DO NOT USE EVAC KITS with fiberglass (or any kind) of muffler packing. Otherwise you're good.

That car is due up for it's 2nd resto mod now that Arthur's Duster is done. I will do the Motion or similar quality catch can in line with the same evac kit. Do not run oil gasses back through the engine or piping with this. I do not recommend using a PVC anywhere in this style setup. It's not good for the engine to ever send it back through the engine but it's been the solution for years to keep oil off the roads. With a catch can you keep the oil gasses from running back through keep the engine cleaner at the same time.

I'm not really worried about low rpm vac signal because when I am in low RPM im probably just warning the car up so the engine isn't running warm so there are less gasses. Otherwise, idling at temp still produces gasses but if you get the biggest hose and fittings you can get like @TT5.9mag said, the catch can will still be viable at the low signal.

If you want to see a really cool PCV for other engines check this adjustable PCV out.