Zola believes the Hammers needs to take 10 points from their remaining games, in order to secure survival in the Premier League.
“Personally, I think 37 should make it for us,” said Zola.
“Some people are saying less, but I want to be sure that 37 will be a good target for us.”
Zola added: “It will be fantastic for me to win at Stamford Bridge.
“The situation is that we need those points. For me and my team, I think it will be a big boost forward.
“I think we have enough quality here to do it. But we have to improve our consistency.”