The 65-year-old hopes the club's first win at their west London rivals for 30 years will provide the turning point in their battle against relegation from the Barclays Premier League.
"That win brings the pack back a bit now. We're still adrift but at least we have half a chance. If we can put back to back wins together anything can happen," Redknapp said.
"Everyone's buzzing on the back of Chelsea, the whole place feels better. There's nothing like it.
"I've been through it so many times before when that big win can change everything. Hopefully it can do that for us now.
"Because of the situation we're in we'll have to claw out results, get some results and nick a 1-0 where we can. We're not going to smash teams up."