The Valvoline American Late Model Iron-Man Series has added two five-figure paydays at Ohio tracks to the schedule in Sept. 19’s 44th annual Jim Dunn Memorial ($10,000-to-win) at Zanesville’s Muskingum County Speedway and Oct. 31’s the season-ending Night the Stars Come Out ($15,000-to-win) at Alma's Atomic Speedway. Among other schedule additions and tweaks for the series:

• The final series weekend at Atomic includes a $5,000-to-win event on Oct. 30.

• To make room for the Dunn Memorial, Atomic moved its Iron-Man Classic to Aug. 22.

• Attica (Ohio) Raceway Park’s May 15 event was cancelled by a scheduling conflict, but the track boosted the purse for the Stephen Wagner Memorial on Sept. 4 with a $7,049-to-win event.