Heading into the F5000 Tasman Cup Revival Series meeting, the record for the 2.8km track belonged to Aucklander Ken Smith, with a fastest time of 1min.01.210sec set last year. Young English racer Michael Lyons lowered that to 1min 0.813sec in the first race on Saturday but Ross went even more quickly in the fourth and final outing on Sunday, trimming it to 1min 0.497sec on the second lap.
His top speed during the race was 268.15kmh.
Ross was quick to share the praise for his achievement.
"I've held a few class lap records but never an outright track one. All credit to the Motorsport Solutions team who prepare and run the car. They've done a brilliant job this weekend. The car was flying, absolutely flying."
Driving a Lola T400, Lyons won every race but as he has missed the series' first two rounds, it leaves Ross still in the lead with three rounds to go.
Ross chased Lyons home for second in the first and fourth races and described the 20-year-old from Essex, north of London, as a "bloody good driver".
In the second race, Ross tangled with Aucklander Clark Proctor on the first corner and wound up 16th out of 22 finishers.
"It spun us both around and I ended up at the back of the field," Ross said.
The third race was almost a non-event because of the intervention for four of the eight laps of the safety car while a bent Begg FM2 was retrieved from the safety barriers but Ross managed a fourth place.
The series continues at Hampton Downs again this weekend before moving to Ruapuna Park, Christchurch, for the penultimate meeting the following weekend.
• Kimi Raikkonen's Formula One comeback picked up speed in Valencia yesterday when the Finn, returning with Lotus, tested a grand prix car for the first time since 2009, Reuters reports.
The "Iceman", 2007 world champion with Ferrari and winner of 18 races with the Italian team and McLaren, is returning to Formula One this season after two years in the world rally championship.
Lotus, formerly Renault, said the 32-year-old aimed to drive as many laps as possible in the two days at the Spanish circuit to get acquainted with his new team and reacclimatise himself with a Formula One car.
"It was nice to get back in the car," Raikkonen, who will be one of six champions on the grid this season, said.
"It was quite a few years since I have driven last time, so of course it takes a little while to get used to it. But the main driving, braking, turning and normal things doesn't take many laps.
"Of course, to start learning about the car and the team and tyres and everything, that will take time," he said.
The season starts in Australia on March 18.