Some intake gaskets purposely block off coolant ports to enable the engine coolant to flow in a predetermined path through the engine. If these ports are not blocked off it could create a short circuit in the cooling system. The following are general specifications which cover both diesel and spark ignition engines. It should be understood that bolt spacing, location of oil and water holes, pressures, etc. This is the sum of the values of the cylinder head plus cylinder block combined.
Smoother finishes are desirable.