First timer changing intake help.

[Jonas_N]

Going to change the intake on my engine and header bolts.

-Do I need to drain out the coolant?
-What type of sealant do I use one the intake bolts that reach the oil?


Additional question:  -any good recommendation on heater hose plugs? ( i want to remove the heater hoses from the water pump to the firewall.)

Thanks

[Kern Dog]

Intake manifolds are DRY on big blocks...NO water passages in them. The intake manifold bolts need some type of NON hardening sealant like Permatex Type 2 or some other type. Liquid Teflon maybe?
Header bolts are dry in aftermarket aluminum heads but the iron heads will leak once a header bolt is removed. The threads do go into a water jacket. They need a sealant as well but it needs to be one that is heat resistant.

[Jonas_N]

Intake manifolds are DRY on big blocks...NO water passages in them. The intake manifold bolts need some type of NON hardening sealant like Permatex Type 2 or some other type. Liquid Teflon maybe?
Header bolts are dry in aftermarket aluminum heads but the iron heads will leak once a header bolt is removed. The threads do go into a water jacket. They need a sealant as well but it needs to be one that is heat resistant.

Thanks 
I was thinking to use the permatex ultra copper on the intake bolts and header bolts (I have iron heads, 413 block.)