Quote:

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" Only other way oil can get in to the intake runners ( "intake full of oil" )is a bad seal between the heads and intake manifold"
How would this happen with a Indy Valley pan on a BB???
Mike

Oil coming in through the PCV hose."

Not trying to be a wise guy Crizila but how could the oil from the pcv valve in the valve cover going either to the carb or a fitting in the intake manifold via a hose be affected by the seal between the manifold and the heads on a bb with a valley cover? If the oil were introduced into the hose by blowby or getting sucked past the baffles it would get directly into the top of the manifold before it ever came in contact down where the heads and the manifold are sealed would they not???
Mike

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His original post stated "intake full of oil". The objective of the PCV system is to eliminate any cranking venting to the atmosphere. If the PCV valve is working correctly, it should be closed at idle. Above idle, it will open a small amount and introduce a vacuum to the crank case. The PCV hose usually gets its vacuum from the carb base or there abouts. If the PCV valve in the valve cover is not working correctly, not shielded properly from oil splash, or there is excessive engine blow-by, oil will travel down the PCV hose and be introduced in to the intake manifold directly under the carb - and you will have oil in the intake manifold. After market valve covers can often create this problem if they do not shield the PCV valve from oil splash. Only way oil can really get in to the runners on a big block.