5. Edelbrock's Gasgacinch makes gasket installation easier and helps produce a better seal. Gasgacinch should be applied to the cylinder head sealing surface, as well as the gasket surface that mates up to the cylinder head. The intake manifold side of the gaskets has sealant embossed onto the surface, so no additional sealant is needed on that side. We found Edelbrock gaskets much easier to work with compared to the old-style OEM gaskets we've used before on this engine.