65 chevelle L9H swap probelms
 

I just swapped a L9H 6.2 out of a 2011 Silverado in my 65 chevelle and the engine is sucking a lot of air through the oil fill spout to the point where it hard to pull it off thought it could have been the intake gasket changed those no luck took the valve covers off looks like all the valve train is moving correctly would any one have any ideas the engine is completely stock. Thanks in advance.