Volvo's withdrawal from Supercars is likely to result in their cars continuing to race this year with engines from another manufacturer.

Garry Rogers Motorsport's pair of Volvo S60 racers will be powered by Chevrolet V8s if legal action to restore the team's factory backing is unsuccessful.

With the first pre-season test more than a month away, neither S60 racer has a motor fitted. Credit:Getty Images

It would be the first time in Australian touring car championship history that a car was allowed to compete with an engine from a different maker.

GRM may be forced to change engines because Volvo has demanded the return of the motors developed by its Polestar racing division for the three-year Supercars program.