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lyrikz · 09-26-2008, 04:07 PM

I have a 71 chevy. 454. Valve covers both have breathers on them. There is a spot coming off my carb. that i can add a PCV to, but is it even necessary?>? I dont have emissions or anything like that and isnt the breathers allowing any crank pressure out???

thanks.

09-26-2008, 04:07 PM	#1
lyrikz PITbut Join Date: Sep 2007 Location: monroe washington Posts: 3,055	Are PCV's necessary? I have a 71 chevy. 454. Valve covers both have breathers on them. There is a spot coming off my carb. that i can add a PCV to, but is it even necessary?>? I dont have emissions or anything like that and isnt the breathers allowing any crank pressure out??? thanks.