Yes, it sounds cool to say that you have high-performance head gaskets made from copper, or the latest MLS set on your engine, but before you build your next hard-running bullet, let's explore ...

Copper head gaskets are quite popular in high-end, low-production, racing engines. "Modular Ford, or any OHC-style engine, should always use an MLS gasket (naturally aspirated or power adder ...

then things like spraying your gaskets with a copper sealant or O-ringing the block may still be necessary. But for modern circle track racing engines, all that should be required are the right ...

Big-block Mopar engines are known for making big torque ... finding them to seal as well as copper gaskets without the requirement of stainless-steel o-rings around the cylinders.