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79 400m Valve cover leak

Hey, I have a 79 400m with aftermarket chrome valve covers and on the driver side valve cover always leaks no matter what i do.. The passenger side doesnt leak a drop.

Could this be a warped head? I just rebuilt the engine and it happend before the rebuild as well on the same side.. i dont get it!!
 

SuperCab

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Montana
Sounds like the aftermarket valve cover is not sealing... Do you have a stock valve cover for it? never heard of a warped head doing this but my experience is 360/390s and GMs...

Cheap aftermarket oil pans, valve covers, etc can be alot of trouble.
 
have you tried throwing some sealant on there?
 
Check the bolt holes on the inside of the valve cover they could be broken iknow this same thing happened with mine and i put the stock valve cover back on i will upload a picture later to show you what i mean
 

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