They’re promising not to be the Dead Sox, but they still have a long way to go to climb out of the grave they have dug.

You did get the sense yesterday the Red Sox are simply mad as hell and aren’t going to take it anymore. They finished last in the AL East last season. They have gone three straight years with no playoffs.

They have not won a postseason game since Oct. 18, 2008, and now they have new faces everywhere you look, including free-agent additions Shane Victorino and Mike Napoli.

“The thing that is coming back to me from talking to all the players,’’ new manager John Farrell told The Post, “is that these players feel there is a real opportunity to rewrite the story.’’

It’s been the ugliest of stories on and off the field for the Red Sox. Farrell is their third manager in three years.

“There are lots of words and phrases you can use,’’ pitcher Jon Lester said about the team’s attitude. “Pissed off is one.

“We got some new faces this year, which is nice. I think we’ve got a good group of guys. If we go out and do our jobs, it will be a different story. There’s that feeling of a renewed start, but at the same time: pissed off.

“None of us have ever experienced what we’ve experienced the last two years. Last year we got our [butt] kicked day in and day out. That’s tough. You can tell the way guys are going about their business today that guys had a little edge to them. It’s a good feeling.’’

Here’s the scary part if you are a Yankees fan: The aging Bombers could find themselves going over the same cliff as the Red Sox in the improving AL East if they are not careful.