Chuvalo became the Canadian amateur heavyweight champion in May 1955, defeating Winnipeg's Peter Piper with a first-round knockout (KO) in a tournament final in Regina, Saskatchewan.

[6] Chuvalo defeated many heavyweights who were top ten contenders, including Johnny Arthur, Julio Mederos, Howard King, Alex Miteff, James J. Parker, Yvon Durelle, Bob Cleroux, Willie Besmanoff, Mike DeJohn, Doug Jones, Bill Nielsen, Dante Cane, Joe Bygraves, Manuel Ramos, Jerry Quarry and Cleveland Williams.

Some of his controversial losses on decision were to Bob Cleroux (twice), Floyd Patterson (Ring Magazine Fighter of the Year), Ernie Terrell and Oscar Bonavena.

[8] On May 11, 2019, the George Chuvalo Neighborhood Centre in Toronto, Ontario, opened which provides a variety of recreational programs for children as well as LGBTQ youth.

[12] In August 1996, despite recent attempts at improving his life, including nearing completion on a degree in Russian Literature from Queen's University, Steven was found dead of a heroin overdose.

[10][14] By the time of Steven's death, Chuvalo had also found himself in financial distress; the mortgage on his home had been foreclosed, and the contents of his house were being removed by creditors, although his economic situation improved over the following decades, due primarily to his giving speeches about his family's travails.

[18] In 2018, a judge ruled that Chuvalo did not have the mental capacity to determine if he wished to reconcile with his wife after living apart for multiple years, and by 2022, he was suffering from advanced dementia.

For his career success and anti-drug speaking campaigns, Chuvalo was awarded the key to the city of Toronto by mayor Rob Ford on March 26, 2013.