Oil catch can or not?

[Gregersen46]

I have Moroso Crankcase Evacuation System on my chevy small block. I was thinking would it be smart to put a oil catch can on or not?

[TheJDMan]

My experience with a crankcase evacuation system on my SBC is that it only worked at higher RPM. It worked well years ago when I was drag racing and twisting 7000 RPM, but I found it to be ineffective on the street where the engine spends most of the time at much lower RPM. I removed the evac system and replaced it with a PCV system. In my experience the PCV system works much better for street use.

68012

[sam 74]

if your motor wasn't built for an evac system you won't see much in gains, that said i just use my evac without a catch can and every once and a while i have to change out the breathers.

[Gregersen46]

I have change out the breather before. So its no point to put on a oil catch can then?