The 56-year-old has been competing in the MSC New Zealand F5000 Tasman Cup Revival Series for the past four years and added his name to a distinguished list of former winners including Stirling Moss and Bruce McLaren.
Ross, who has been racing competitively for about 20 years, played down his achievement when contacted for comment.
"It is different now than what it was, isn't it?" he said.
"It was the trophy to have in its day."
Perhaps, but Ross still beat a strong field which included Ken Smith, who was hoping to win it for a record fifth time.
"I've been second for three years and now I've finally got it.
"We were lucky, the car was absolutely singing."
Ross set the fastest time during qualifying and won all three races, including the feature Lady Wigram Trophy which was first awarded in 1949.
The defending series champion scorched his way around Ruapuna track in his McRae GM1 and has won the first two rounds of the series this season.
"We didn't have a problem with the car all weekend and it just blitzed the field. We were probably a second a lap better than anybody else out there."
The Formula 5000 are single-seat racing cars which were widely raced during the 1970s.
They rather resemble a cigar with wheels and Ross said his McRae could reach speeds of up to 280kmh.
"They're very, very fast. They are rocketships in a straight line. They are not the best handling car in the world but for their time they were the equal of the Formula One cars."
They are not cheap to keep on the track, especially if you want to keep them at the front of the field. But Ross is not one for adding it up. He has "12 to 15 cars" and they are his passion, so who is counting?
Smith (Lola T430), finished second with Alan Dunkley taking third place in the oldest car in the field, a high-wing 1968 Lola T140.
Ross will skip round three in Eastern Creek, Sydney from November 22-25 but will return for round four at Hampton Downs in AucklandThe series winds up at Teretonga Park in Invercargill in mid February.
