Read up on head gaskets & quench some more.
The area of the larger head gasket is dead space between the head & block is not considered a quench area, just dead space.
Quench, or squish area is typically the flat area on the top of the piston that's almost level with the top of the block deck. It must have a corresponding flat area on the deck surface of the head to qualify as quench.
MBHD
