United travel to west London knowing victory will give them a seven-point lead in the Premier League and extinguish Chelsea's slim hopes of retaining the title.
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"They have brilliant centre backs and always the motivation is high when you play against them," Torres, who will not have to face the injured Rio Ferdinand, told Chelsea's website.
"You want to play well against these players to show you can do it, and Vidic and Ferdinand were always a big challenge for me. Some people prefer big players not to be playing but I prefer to play against these kinds of players."
"This will be an interesting game because it can make us come back to fight for the title, it is one of the most important games of the season right now," he said.
"If we win this one we are closer to them and we have will still have one more game against them."
Chelsea's Ashley Cole faces action after accidentally shooting an intern with an air gun and United's Wayne Rooney appeared fortunate to escape FA disciplinary measures after an elbowing incident in the 4-0 win at Wigan Athletic.
