Vented valve cover or no?
On my 64 with a 305E engine, this is the non california engine so there is no pcv but there is a crankcase fresh air filter on the driver's rear of the engine and the cylinder heads have the air valves that suck the emissions into the combustion chambers. My engine had a breather cap on the passenger side valve cover and I can smell blow by gases. I'm thinking this needs to be a closed system correct? I replaced the breather cap with a non vented oil fill cap on it and will see how it goes. Any comments will be appreciated because I have never seen this type of emission system.
Steve
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Steve Stock
Gig Harbor, Wa
1953 Chevrolet 3100
261 cu inch, SM420
Finished Cab off restoration
1964 GMC 1000
305 V6, SM 420
Restoration is now started, still looking for an oldsmobile style power steering pump
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