Anton De Pasquale and Shane van Gisbergen will start from pole for the opening two races at Albert Park in support of the Formula 1 Rolex Australian Grand Prix.
The Shell V-Power Racing driver set a 1m 49.316s as the benchmark to lead fellow Norwell graduate Brodie Kostecki by 0.040s in the Coca-Cola Racing by Erebus Chevrolet Camaro.
In the newly repaired Red Bull Ampol Racing Camaro, title combatant Shane van Gisbergen was third ahead of championship leader Chaz Mostert in the Optus Mobil 1 Racing Ford Mustang and Monster Energy Racing’s Cam Waters.
Kostecki’s teammate Will Brown was sixth from impressive performer Jack Le Brocq in the Truck Assist Racing Chevrolet Camaro, Broc Feeney in the second Red Bull Ampol Racing entry, rookie Matt Payne for Penrite Racing and Nick Percat in the NTI Mobil 1 Racing Mustang.
Thomas Randle just missed out on the top 10 in 11th, while Will Davison was 15th, David Reynolds 18th and Andre Heimgartner 19th.
For the second session to decide the grid for tomorrow’s Race 2, van Gisbergen was quickest on a 1m 47.253 to marginally lead Brown by just 0.019s and teammate Feeney a further 0.593s in arrears.
Kostecki followed in fourth from DEWALT Racing’s Mark Winterbottom, Reynolds, Waters, Davison, Courtney and Mostert.
De Pasquale was 11th, while Heimgartner failed to replicate his practice pace to be 16th ahead of Percat as Nulon Racing’s James Golding was 19th.
The opening race of the weekend for the Repco Supercars Championship is scheduled to start at 5:40pm AEDT.