As one builds more HP into an engine, one will also increase the pressure in the cylinder.
***This is often given as the BMEP, or the average pressure in the cylinder, for which I have the formula in my signature line.
In order to avoid this happening, one must clamp the cylinder heads to the block, in a more efficient manner.
To accommodate this; larger and higher quality head studs are often used. Same thing with pushrods. When spring pressures are increased, one must also increase the strength, e.g. material / diameter / taper of the pushrod.
If you had lifted a head, you would have (more than likely) torched the head gasket, and possibly the head. Believe me, once the head has lifted, it does not take much time to torch either the head gasket, or the head. This is why I became surprised, as you had not, to my knowledge, brought up head gasket issues within your previous posts.
Finding a little water within the head bolt threads of the block, in my opinion, does not indicate that one has a blown head gasket. Water goes everywhere, when one removes a cylinder head. A compression test is usually performed before taking the heads off. After the cylinder head has been removed from the engine block, a simple visual inspection of the head gasket will show one if it is blown.