Abstract: A masonry block wall system is disclosed comprising a plurality of piers positioned at predetermined intervals with a pilaster mounted on each of the piers. The pilasters are formed by vertically stacked masonry blocks that are attached to the pier by a reinforcing rod extending upwardly from the pier through a vertical mortarless void in the blocks. A plurality of courses of masonry blocks form block wall panels, each of the blocks in the panels having horizontal mortarless voids therein, the horizontal and vertical joints between adjacent courses being interlocking and mortarless. Selected courses of masonry blocks have a horizontal reinforcing rod attached to each block in the course without mortar or grout.