Portugal wrapped up Pool A while Cuba punched a bid to the semifinals as Pool B runner-ups.
Cuba finished off an undefeated tournament to win the 2018 Men NORCECA Challenge Cup and earn a bid to the FIVB.
Cuba swept Puerto Rico in a meeting of the top two teams while Guatemala got in the win column.
Puerto Rico took down Costa Rica while Cuba defeated Trinidad & Tobago to set up a clash atop the table between the two.
After winning 14 straight sets, Argentina finally lost one in the gold medal match of the Pan American Cup, but bounced back to win the match in four sets.