Kevin Harvick celebrates after winning his fourth Busch race of the season at the NAPA Auto Parts 200 on Saturday in Montreal.

Montreal ? Kevin Harvick held off hometown star Patrick Carpentier to win the inaugural Busch Series race in Canada on Saturday, but Robby Gordon tried to claim the win in a finish that infuriated NASCAR.

Marcos Ambrose was headed toward what would have been his first NASCAR victory when Gordon passed him after a restart with four laps to go as several cars crashed behind them. Gordon was out front for mere seconds before Ambrose nudged him from behind to send him into a spin as Ambrose reclaimed the lead.

Gordon was stuck idling as the field roared by him under caution. When he recovered, he gave Ambrose a retaliatory bump, then tried to move into the first position behind the pace car.

Gordon believed he was in first – and at worst, second – when the caution waved. But NASCAR said the spin left him unable to maintain his position and ordered him back to 13th. He refused to drop back, and was in the second position behind Ambrose when the race resumed with three to go. NASCAR immediately stopped scoring him, but Gordon continued to race on.

Gordon knocked Ambrose out of his way and moved into the unofficial lead, but NASCAR refused to acknowledge him and waved the black flag every time he sped past the flagstand.

Andy Pilgrim was behind Gordon but ran out of gas, putting Harvick into the lead with Montreal native Carpentier right behind him. Carpentier made an attempt to get past Harvick, but when the move failed, he faded back and never mounted another challenge as Harvick rolled to the win.

But Gordon was also celebrating, doing victory burnouts on the track at the same time as Harvick.

“I won the race,” Gordon said.

NASCAR officials left the scoring tower and went straight to their office, where Gordon met them. He left the meeting with a copy of the rule book, but he was still seething.

“You always go back to your position if you get spun out, and (Ambrose) spun me under the caution,” Gordon said.