Upgrading to LS valve covers with 10an fittings
If you've been pushing any real power through a Gen III or Gen IV small block, you probably realized pretty quickly that the factory PCV system is a bit of a joke, which is why switching to ls valve covers with 10an fittings has become such a standard move. It's one of those modifications that looks like a purely aesthetic choice at first glance—those braided lines and black fittings definitely clean up an engine bay—but the reality is much more about keeping your engine from pushing out seals or spraying oil all over your headers. ...