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Old 04-30-2013, 09:49 PM   #2
cableguy0
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Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
Re: PCV valve and a breather or just 2 breathers? 350 chevy

You need the pcv and a breather. They should be on opposite sides to create an air flow through the engine to get the bad stuff out. Without a pcv you run the risk of blowing out seals or actually having an explosion in the crankcase. The engine will also sludge up inside quickly.
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