Brock's Torana fetches record price.

The 1973 Holden Torana XU1 that carried Peter Brock to his maiden Australian Touring Car title has been sold to a private enthusiast for a record prize of $500,000.

The construction company owner, from Melbourne's eastern suburbs, had previously seen the car in storage and made an offer that couldn't be refused.

The car was owned by the family of Ian Tate, a former Holden Dealer Team engine builder, and rebuilt to original specifications and 1973 racing livery and featured in the Peter Brock Sandown tribute in September.

The Torana - which finished on the podium in all eight of its championship outings - is also famous for the 1973 Bathurst race, when it finished second in the hands of Brock and Doug Chivas despite the latter being forced to push it down pitlane when it ran out of fuel.

"I just had to have it," the new owner, who wishes to remain anonymous, said. "The Tates wanted the Torana to stay in Victoria and I'd been looking for that kind of car for a while.

"I'm really just the custodian for the next owner. The Tates can still display the car and run it at Historic race meetings as they have done in the past."

The previous highest priced Holden is thought to be a 1948 Holden FX prototype that sold for around $400,000 in 2001, and can now be found in Canberra's National Museum.