full ARCA schedule in 2014, along with a partial schedule in the No. 23 in the Truck Series, sharing the ride with Max Gresham. Gallagher was involved in an incident with John Wes Townley at the Iowa truck race in July, leading to a physical confrontation between the two and their respective crew members after the race. Townley and Gallagher, both competitors in the ARCA series as well, felt there was mutual bad blood built up between each other. The two had a friendlier conversation afterwards. In October 2014 he got his first win in the 20th and final race of the ARCA season, the ARCA 98.9 at Kansas Speedway. Gallagher started 32nd, and led the final 32 laps of the race. Later that month, he earned a Truck Series best finish of third at Talladega on a last lap charge through the field. NASCAR 2015 Gallagher went full-time in GMS Racing's 23 truck for 2015. Gallagher earned a second-place finish at Gateway Motorsports Park in June. 2016 Gallagher started the season with a low note crashing early at Daytona and recovered for a 21st-place finish. Starting at Phoenix, Gallagher ran a limited Xfinity Series schedule using the No. 21, scoring his first top 10 at Daytona. In the Truck Series he scored five straight top ten finishes until Texas. On June 25, 2016 at Gateway Motorsports Park, Gallagher was involved in a crash with John Wes Townley on lap 155 which led to an awkward fight between the two drivers for several seconds before NASCAR officials separated them. He was fined $12,000 and placed on probation at the end of the year. Gallagher finished 2nd at Talladega behind teammate Grant Enfinger. 2017 Gallagher moved up to the Xfinity Series full-time in 2017 with GMS, driving the No. 23 Chevy. During practice for the OneMain Financial 200 at Dover International Speedway, Gallagher spun Joey Gase going into turn three after Gase slowed down. Gase, running for single-car team Means Racing, blasted Gallagher in an interview with Fox Sports 1 afterwards, claiming that Gallagher "really, really sucks" for only being one spot ahead of Gase in the standings despite running for a top-tier team. This came after Gallagher told Gase to "get the hell away" in their conversation after the incident. 2018 In April, Gallagher scored his first career Xfinity win at Talladega; he passed leader Tyler Reddick on the final