MILLVILLE, N.J. - Billy Johnson and Jack Roush Jr. combined to lead all but four laps in Saturday's Garden State 250 victory at New Jersey Motorsports Park, the eighth round of the 2010 GRAND-AM Continental Tire Sports Car Challenge season.
Johnson took over from Roush at the halfway point of the 87-lap, two-and-a-half hour race on the 2.25-mile Thunderbolt Raceway course, and - after coming out of the pits second - moved around Joe Koenig on the inside of Turn 1 on Lap 49. He engaged in a spirited battle for several laps with second-place finisher Matt Plumb, but Johnson was never headed after he put the No. 61 ROUSH Performance Products Ford Mustang GT up front.
The winning margin of victory was 1.384 seconds, the seventh race this season with a margin of victory under two seconds.
"It was tough for my stint," Johnson said. "I had two fast cars - with fast teams and fast drivers - behind me. I managed that as best as I could. I had to work hard to keep the tires under us for the end."
Roush, who earlier Saturday garnered a track qualifying record of 1:30.109, led the opening 44 laps, which featured four of the race's five cautions. Johnson led the final 39 laps.
Plumb and new co-driver Nick Longhi finished second in the No. 13 RumBum.com BMW M3, which fell several positions early as the team opted for a two-pit stop strategy. They were joined on the podium by Joey Hand and Michael Marsal in the No. 97 Turner Motorsport BMW M3.
The ninth of 10 rounds on the 2010 circuit comes Aug. 13-14 in the annual Grand Prix de Trois-Rivières in Quebec, Canada.