Brazil have already turned their attention to winning the World Cup after defending the Confederations Cup, with coach Dunga saying his players are capable of anything.
The five-time world champions came from behind to crush underdogs United States 3-2 at Ellis Park on Sunday for their seventh win in 20 days - five at the tournament and two World Cup qualifiers.
They looked out for the count after Clint Dempsey and Landon Donovan put the Americans 2-0 up at half-time but bounced back with a Luis Fabiano brace drawing them level with 16 minutes left.
It set the scene for an exciting finale and captain Lucio made it a memorable day with a powerful header from an Elano corner with six minutes remaining.
Brazil are not yet certain of being at the 2010 World Cup but top South American qualifying and hope to get over the line after their next two games, with Dunga already fighting to play down their early favourites tag.
He said the key was not to get carried away with their victory on Sunday, having also clinched the Confederations Cup four years ago in Germany and then failing to translate their form at the World Cup a year later.
"The dangers are always there," said Dunga, the World Cup winning captain from 1994, in looking ahead to the World Cup.
"I have to find players in form this coming year and deal with this issue of being a favourite team."
Sunday's victory was Brazil's third Confederations Cup crown following triumphs in 1997 and 2005. But they did it the hard way.
"All the players were very concentrated on what needed to be done. I told them at half-time that we needed an early goal and to play the game we play. We wanted to win. We were very determined," said Dunga.
"It is difficult to overcome a 2-0 deficit but if you have committed players who always want to win then it is possible."
Dunga has a young and hugely talented squad, epitomised by Real Madrid's new recruit Kaka.
He said the team was overjoyed at winning on Sunday but said they knew it was just a step on the long road to the bigger prize next year back in South Africa.
"We have to qualify first. We have four games left," said Kaka.
"We must avoid any euphoria because that sort of thing hindered our preparations at the last World Cup. So here we are trying to be calm."
Dunga said the squad was one of the most motivated he had ever worked with.
"Even when I played I never saw a team together for 30 days with no problems," he said.
"No one could write anything controversial or negative.
"We have a very committed team, players of a high quality. They are professionals, very capable and they are true men who have been in South Africa for a long time without vacation and without seeing their families.
"Yet they always give their utmost."