Toon idol Shearer has taken over at St James' Park until the end of the season and Ramage believes his old team-mate can drag them away from the relegation zone.
"He's the only man for the job, it's as simple as that," Ramage told Rangers' official website.
"He's a living legend up there - it has to be seen to be believed. He's a god up there.
"There's no denying they are in the doldrums at the moment but getting Al back will give the whole town a huge boost."