The rules say I need a catch can. I've always used a breather in each valve cover. How much ventilation does an engine need?
NA BBC 468 7500 RPM.
Do I run a hose to a can and plug the hole in the other cover?
Run a hose from each cover to the same can?
If I ran a hose from each cover to 1 can, should it have 2 breathers?
Use a separate can for each cover?
What size of hose should I use?