The president of the Los Angeles Olympic Organizing Committee said yesterday he has clashed with the International Olympic Committee on several issues, but, to protect the economic viability of the 1984 Summer Games, has refused to back down.

"The International Olympic Committee really has been bothered because, historically, whenever something wasn't going right, they'd talk to the equivalent of the secretary of state and they got what they wanted," said Peter V. Ueberroth, LAOOC president.

At a luncheon meeting with editors and reporters of The Washington Post, Ueberroth said the IOC has "always been able to demand what they want.

"For instance, every Olympics since Mexico has built a rowing and canoeing course. The least expensive was $17 million. That's a wonderful sport, but it can be done just as well on a lake, and you can save, in our case, $35 million to $40 million. You could build a nice wing of a hospital for that kind of money, so we're rowing in a lake. But they don't like it.

"That's the kind of attitude we've had to take to maintain the economics of our game."

Ueberroth also said his committee disagreed with the IOC over the starting time of the marathon, which will be run at night to protect runners from the Southern California August heat. The IOC wanted it run earlier in the day. The marathon will be part of the Olympic closing ceremony in the Los Angeles Coliseum.

"The IOC said no, we said yes, so it's yes," said Ueberroth.

Ueberroth, a Los Angeles businessman who became president of the LAOOC in April of 1979, said next summer's Games have a budget of about $500 million but that the money will all come from private, commercial and corporate sources. He expects a surplus that will be used to underwrite youth sport programs in the United States.

Television and radio rights will account for $280 million of the Olympic revenues, Ueberroth said, and corporate sponsors will supply another $120 million. The rest of the money will come from sales of tickets--which will average $18 each--and Olympic commemorative coins. Ticket sales are expected to generate $90 million during the July 28-Aug. 12 Olympiad and coin sales from $6 to $60 million.

Preliminary rounds of the Olympic soccer matches will be held at the Navy-Marine Corps Memorial Stadium in Annapolis, Harvard Stadium at Stanford and in the Rose Bowl. Quarterfinal, semifinal and final games will be on the West Coast.