NASCAR worked through multiple changes to the Next Gen car Wednesday during the first run of its two-day organizational test at Charlotte Motor Speedway.

The eight-hour session, which began at 8 a.m. ET and ended at 4 p.m. ET, broke up into three mini sessions, each with a different aero/engine configuration. The first featured a 550-horsepower engine with a seven-inch spoiler. The second was a 670-horsepower engine with a six-inch spoiler. The third and final remained the same, but the spoiler was offset to the passenger side.

Consistent across the packages, but new to Next Gen testing overall, were splitter stuffers, engine panel strakes and rear diffuser skirts. According to NASCAR, the purpose of these additions is to help with predictability in traffic. And unlike last time, there were actually on-track periods scheduled specifically for pack racing with each configuration.

NASCAR.com

Day 1

PositionNo.DriverBest TimeDifferenceBest SpeedTeam112Ryan Blaney29.668182.014Team Penske299Ross Chastain29.671-0.003181.996Trackhouse Racing345Kurt Busch29.831-0.163181.02023XI Racing49Alex Bowman29.839-0.171180.971Hendrick Motorsports58Tyler Reddick29.848-0.180180.917Richard Childress Racing624William Byron29.851-0.183

180.898

Hendrick Motorsports747Ricky Stenhouse Jr.

29.851

-0.183

180.898

JTG Daugherty Racing819Martin Truex Jr.

29.936

-0.268

180.385

Joe Gibbs Racing96Brad Keselowski

29.973

-0.305

180.162

RFK Racing1010Aric Almirola

29.984

-0.316

180.096

Stewart-Haas Racing1142Erik Jones

30.022

-0.354

179.868

Petty GMS Racing1218Kyle Busch

30.053

-0.385

179.683

Joe Gibbs Racing137Corey LaJoie

30.059

-0.391

179.647

Spire Motorsports1431Daniel Hemric

30.096

-0.428

179.426

Kaulig Racing152Austin Cindric

30.161

-0.493

179.039

Team Penske1614Chase Briscoe

30.327

-0.659

178.059

Stewart-Haas Racing1721Harrison Burton

30.336

-0.668

178.006

Wood Brothers Racing1838Todd Gilliland

30.370

-0.702

177.807

Front Row Motorsports

NASCAR.com

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