Harry Redknapp feels Portsmouth need another 14 points to secure their Premiership status.
Pompey are mired in the drop zone and have amassed just 24 points from 30 games.
However, they have shown signs of life in the last month and Redknapp is targeting a 14-point haul from their final eight games to stave off the threat of relegation.
"I was driving home from watching Spurs beat West Brom 2-1 on Monday wondering how many points we needed," said the Fratton Park chief.
"Four wins and a draw would give us 37 points, but I don't know if that is enough with our inferior goal-difference.
"I think we may need 38 points, which is four wins and two draws."
Pompey chairman Milan Mandaric is convinced the club will stay up and Redknapp is of a similar mindset.
"We are looking stronger and better at the right time," he added. "We hardly have any injuries and suddenly I look out at training and see 18 good players."