Former Dodgers manager Tommy Lasorda greets the team’s newest player, Manny Ramirez, yesterday.

AP / Chris Carlson

LOS ANGELES — Manny Ramirez showed up at Dodger Stadium with a new attitude, a new number and a willingness to cut his flowing dreadlocks.

“I feel great, man. I’m happy,” Ramirez told some 200 media members behind home plate about three hours before making his debut with the Los Angeles Dodgers last night. “Whatever happened in Boston is in the past. I’m excited, man. I can’t wait. I feel like I took 5,000 pounds off my back.

“It’s just a new chapter in my life. I’m happy to be here. That’s all I can say. L.A.’s a great city. I’m happy to be a Dodger.”

The Dodgers acquired the future Hall-of-Famer from the exasperated Red Sox a day earlier, giving up two minor-leaguers in a shocking three-team trade that sent outfielder Jason Bay from Pittsburgh to Boston.

Ramirez said he spoke with former teammates David Ortiz and Julio Lugo after the trade was announced, and harbored no bitterness toward the Red Sox.

“I want to say something from the bottom of my heart,” Ramirez said. “I want to thank the fans in Boston. I love you guys. I just want to move on. I’m thinking Blue right now, I’m thinking about the Dodgers. I want people to judge me on what I do here, not what I did in Boston.”

Ramirez sidestepped a question regarding a report that veteran Boston players had told upper management that he needed to go.

Ramirez played with the Cleveland Indians from 1993-2000 before signing an eight-year, $160-million contract with the Red Sox.

“I’m in a new league,” he said. “I’m just going to do my best.”

When asked what changes he might make, Ramirez laughed and replied: “I’m going to start maybe stealing some bases. I don’t go deep anymore. I just hit line drives to right field.”

Ramirez has one stolen base this season — his first since 2005.

The 36-year-old Ramirez, among baseball’s career leaders in several categories, answered questions in English and Spanish before ending the availability after less than 15 minutes by saying: “Can I go and get something to eat, get ready for the game?”

Manager Joe Torre, whose Yankees teams went against Ramirez countless times, put the eccentric slugger in his customary left field and cleanup spot against Arizona’s Randy Johnson.

“I’m like a little kid now, I’m kind of nervous,” Ramirez said. “I’m just going to be Manny and play the game.”

Asked about Torre, Ramirez said: “I’ve played a lot against him. I’ll let you know in a month.”

We went through some conversation.”

Torre said he asked Ramirez how important his hair was to him and was told he’d do whatever the manager wanted. Torre said he asked Ramirez to “clean it up a little bit and make it manageable.”

“I’ve got to cut it. I’m going to be looking like a baby,” Ramirez said with a smile.

“It was good to see him,” said Nomar Garciaparra, a new teammate in L.A. who played with Ramirez in Boston. “I told him we’d catch up later.”