Several changes were made in the IROC format for the second year. Oval races were added at Michigan and Daytona, and the Porsches were replaced with Chevrolet Camaros. Bobby Unser won the first race when a last lap "slingshot" effort by his pursuers failed to work. Ronnie Peterson won the pole despite never having seen an oval before. Race 1 was marred by the accident of Jody Scheckter and a later entanglement between Richard Petty and A. J. Foyt. Emerson Fittipaldi won Race 2 on the road course at Riverside after moving up from seventh on the grid. Bobby Unser and Bobby Allison tangled on the first turn sending Allison to the hospital with a fractured vertebrae. Unser was uninjured and restarted the race in a backup car. Allison came back one day later to win Race 3, broken back and all. Fittipaldi kept the crowd on its feet with a stirring drive from 12th to third. Nine drivers advanced to Daytona, perhaps one of the best races in IROC history, with eight of the nine starters leading at least once across the start/finish line. Unser just edged out A.J. Foyt to win the final race and the series title. (from IROC Website)

Final Points
	IROC 2 Champion Bobby Unser
Position	Driver/Residence/Sanction	Money Earned
1	Bobby Unser/Albuquerque, NM/USAC	$41,000
2	A. J. Foyt/Houston, TX/USAC	27,600
3	Cale Yarborough/Timmonsville, SC/NASCAR	22,200
4	Bobby Allison/Hueytown, AL/NASCAR	20,400
5	Emerson Fittipaldi/Sao Paolo, Brazil/FIA	18,300
6	David Pearson/Spartanburg, SC/NASCAR	16,500
7	George Follmer/Huntington Beach, CA/SCCA	15,300
8	Ronnie Peterson/Orebro, Sweden/FIA	12,300
9	Johnny Rutherford/Ft. Worth, TX/USAC	9,900
10	Richard Petty/Randleman, NC/NASCAR	6,000
11	Graham Hill/London, England/FIA	5,400
12	Jody Scheckter/E. London, S. Africa/FIA	4,500