[Chevelle-List] Intake manifold gasket sealant suggestions

[K. Kaya]

Title: Intake manifold gasket sealant suggestions

Looking for recommendations for what type of gasket sealant to use on my cast iron intake manifold to cast iron heads.  

Silicone?  Copper spray?  Black monkey snot?

What has worked for y’all?

Thanks,
Kurt
‘64 convt. in resto