Grgich was known as a tough and sometimes vicious two-way lineman who loved to intimidate Norm Van Brocklin.

Grgich taught drivers education at Oakdale High School until he retired in 1986.

As a teacher he was greatly loved by his many students who quickly learned you could derail a day's instruction at the mere mention of the San Francisco 49ers, at which time Grgich would bring out old reel movies of San Francisco 49ers games from his playing days.

In 1982 his students raised money to pay his way to Detroit to watch his beloved San Francisco 49ers play the Cincinnati Bengals in Super Bowl XVI.

Visco continued to live in the Oakdale, California area until he was moved to Dale Commons assisted-living facility in Modesto, California shortly prior to his wife Grace, the country and western singer known as "Sioux City Sue," died in 2001.