LOS ANGELES, May. 27 — The attorney for Bruce Davis, a defendant of the Hinman-Shea murders, said he will fly to San Francisco today to ask the State Supreme Court to delay the trial.

Davis 27, condemned mass murder Charles Manson 36, and two others were set to go to trial today at 10 a.m.

But trial Judge Raymond Choate will not call the case until 2 p.m. so Davis’ attorney, George V. Denny III, can go to San Francisco.

If Denny obtains a delay in Davis trial, such a stay also would affect the other three defendants, because the attorney is raising legal points which concern all of them.

Denny said he will ask for a trial postponement until the State Supreme Court can fully consider the petitions he will file challenging rulings made by Judge Choate in pretrial motions.

These rulings involve requests to dismiss charges, severance of the two murder counts, severance of the trial of each defendant from the others, and a change of venue on grounds of publicity surrounding the case.

Judge Choate previously denied these motions.

In addition, the District Court of Appeal has denied petitions filed by Denny in these matters.

Davis and Manson are each accused of the 1969 murders of Topanga Canyon musician Gary Hinman and movie stunt man Donald (Shorty) Shea.

Susan Atkins 23, condemned with Manson and two others for the Tate-LaBianca murders, is charged only with killing Hinman.

Steven Grogan 20, is accused of the alleged slaying of Shea, whose body has never been found.

If Denny’s attempt to get a delay fails, jury selection before Judge Choate could stall today.