Ok well Im getting my y block all ready to go back in my truck. So I have cleaned and painted mostly everything. Now its time to put all the new gaskets on it, I didnt buy a whole new gasket set because I didnt take the heads off. I am replacing the intake gaskets,valley pan, valve covers,exhaust,oil pan,timing cover and water pump gaskets. Which of these need sealant or is the gasket good enough to seal itself?

Fomoco Low Life