Just like a London bus, Prodrive Racing Australia waited over a year for a V8 Supercars pole position and then secured two within half an hour.

Bathurst champion Chaz Mostert ended a drought for the Ford team stretching back to the 2013 Phillip Island sprint event when he snared the first pole of his V8s career for Saturday’s first 25-lap race at Barbagallo Raceway.

His teammate, Mark Winterbottom, then claimed the coveted pole position for the second 25-lap race, pipping defending champion Jamie Whincup to the first spot on the grid.

“It’s awesome,” Winterbottom told Fox Sports.

“I’ve broken my drought. Certainly didn’t want to go another year without a pole.”

Despite missing out on pole position, Whincup will be relieved with his effort in Saturday’s second qualifying run after he could only qualify 21st for the opening race.

The Holden driver, who goes into this weekend’s event holding a narrow championship lead, had held top spot on the timesheets with a 56.9349 seconds best lap before Winterbottom snatched pole with a 56.9013.

Mostert, who won at Barbagallo last year, clocked a 57.0403 lap to finish ahead of Winterbottom in the day’s first qualifying run.

Whincup’s teammate Craig Lowndes, who is chasing a unprecedented 100th V8s race win this weekend, will start both races on the second row of the grid.

Lowndes, a 15-time race winner in Perth, qualified third for race one and fourth for race two.

Holden’s James Courtney, Whincup’s nearest rival in the title race, will start both races from sixth position on the grid as he chases his first podium in Perth.

Saturday’s action begins with the first 60km race from 1.15pm (1515AEST) and the second race starts at 3.15pm (1715AEST).