AUBURN, Mich. – The green flag flies this Friday night for Tri-City Motor Speedway’s seventh annual Greased Pig special.IMCA Modifieds race for $1,077 to win and a minimum of $150 to start their June 16 Fast Shafts All-Star Invitational ballot qualifier, sponsored by Allstar Performance. The main event will be 41 laps.IMCA Speedway Motors Weekly Racing National, Dirt Works Eastern Region, Allstar Performance State and local track points will be awarded.There is no entry fee. Pit gates at Auburn open at 5 p.m., the grandstand opens at 5:30 p.m., hot laps are at 6:30 p.m. with racing to follow the National Anthem at 8:15 p.m.Grandstand admission is $14 for adults and $13 for fans ages 55. It’s Kids’ Night and fans 15 and under get in free. Pit passes are $28 for adults and $14 for kids ages 3-12.More information about the Greased Pig is available by calling 989 316-6804 and at the track website, www.tricityracetrack.com.