Thermalnator is a unique high temperature shielding gasket which
replaces the stock intake manifold gasket. Thermalnator?s cooling
properties reduce heat by stopping metal to metal contact between the
intake manifold and the engine block. By using a Thermalnator gasket,
you will reduce the heat of the air entering your engine, making up to
5% more power. Thermalnator gaskets allow the intake manifold to perform
like an intercooler. Because the manifold is no longer heated by the
cylinder head, the heat from incoming air can dissipate through the
aluminum very rapidly. The basic formula for this is for every 5 degrees
F increase in intake air temp, air density is reduced by 1%. The denser
the air is, the better the gain in horsepower.