To vent or not to vent?

[dflarsen77]

I use a 2" spacer on my edelbrock carb and my air cleaner is a pretty low drop like yours. Glad that worked out, although I'm kinda surprised that was it.

Anyways, you def need the breather filter on the passenger side. The pcv runs to the carb and basically sucks the gas out of the crank case, and the breather is where the air gets in to allow that. Originally, they had a big tube off the air cleaner that ran to where that breather is, and used a flame arrestor. So yours (and mine) I think is referred to as an open system because it pulls air from the atmosphere. But you can get a breather with a little port on the side, and then an air cleaner with a little port that can be added, and run a hose between them and then it's a closed system. I think running it that way might be better because it will push more air in, but I really have no idea.