Just guessing, but a new "bare" block destined for some serious horse power output would need:
Line boring the main bearing holes for the crank AND the camshaft.
Check the deck height.
Stress relief, like sand blasting to smooth all surfaces.
Stress relief would also apply to con rods or more later in the build.
Check for hairline cracks (no, I don't trust the "factory").
Check the cylinder bore for accuracy.
Precision honeing of the block (using the torque plate method).
De bur and chamfer all
oil holes.
Paint the INSIDE of the block to assure smooth
oil return as it runs back to the pan.
And all this just to PREPARE for the engine build!
Ernie