Not all teams announce their weekly race chassis'. Here is a list of those teams that do reveal the chassis in the teams race preview:
#2- Brad Keselowski - Primary Chassis: PRS-838 - Last Raced at Phoenix, finished fourth.
#5- Kasey Kahne - Time Warner Cable will adorn the hood of Kahne's No. 5 Chevrolet SS this weekend at Darlington. Crew chief Kenny Francis will unload Hendrick Motorsports Chassis No. 5-739 for Saturday night's event at Darlington. This is a new chassis.
#9- Marcos Ambrose - The No. 9 Stanley Tools team has prepared chassis No. 842 for Darlington. Ambrose previously drove this chassis at Auto Club Speedway earlier this year.
#14-Tony Stewart - Chassis No. 14-708: This car debuted in last year’s Southern 500 at Darlington where Stewart rallied Chassis No. 14-708 from its 17th-place starting spot to finish third.Its second start came in June at Dover International Speedway. It endured a much different outing, qualifying 29th and finishing 25th, 69 laps down after getting caught up in a 12-car accident on lap 10 ofthe 400-lap race around the 1-mile, concrete oval. With new sheet metal all around, Chassis No. 14-708 returned to the concrete for its third career start in August for the night race at Bristol Motor Speedway. There, the car rallied from being a lap down in 34th place early in the race to vying for the lead with Matt Kenseth on lap 333. Stewart and Kenseth banged fenders and crashed, whereupon Stewart threw his helmet with pinpoint accuracy at Kenseth’s car. The resulting 27th-place finish was at least offset by the “10” Stewart received from theBristol crowd. Chassis No. 14-708 made its fourth career start and second at Dover in the AAA 400 in September. Its struggles on concrete persisted, as it qualified 24th and finished three laps down in 20th. With 2013 Chevrolet SS bodywork covering it, Chassis No. 14-708 returned to racing in March at AutoClub Speedway in Fontana, Calif., for the Auto Club 400. With 10 laps remaining, Stewart was third and in prime position for his best finish ofthe season. But a block by Joey Logano on the lap-190 restart forced Stewart to make an evasive move to the inside of the tri-oval, thwarting his forward momentum. A freight train of cars passed Stewart, jettisoning him to a disappointing 22nd-place finish. Chassis No. 14-708 will make it sixth career start and second this season in the Southern 500 at Darlington.
#16- Greg Biffle - The #16 Meguiar’s Ford Fusion Primary Chassis RK-809 last raced at Texas in 2012, earning a 10th-place finish. Backup Chassis: RK-822 Last ran Martinsville – finished 9th.
#17- Ricky Stenhouse Jr - The No. 17 Zest Ford Fusion Primary Chassis RK-815 is the same chassis that the No.17 team ran at Fontana finishing a respectable 20th. The backup Chassis RK-811 was a chassis that the No. 99 ran numerous times in 2012.
#22- Joey Logano - Primary Chassis: PRS-839 - Last Raced at Phoenix, finished 26th.
#24- Jeff Gordon - Gordon will race Hendrick Motorsports chassis No. 24-780 this week at darlington. The car finished 25th at Las Vegas and 38th at Texas earlier this year in only two starts.
#29- Kevin Harvick - This Week's Budweiser Chevrolet at Darlington Raceway,, Kevin Harvick will pilot chassis No. 383 from the Richard Childress Racing NASCAR Sprint Cup Series stable in the Southern 500. This is the same Chevrolet the Bakersfield, Calif., native drove to Victory Lane at Phoenix International Raceway last November and a 13th-place result in March.
#31- Jeff Burton - This Week's No. 31 Caterpillar Chevrolet at Darlington Raceway,, Jeff Burton will race chassis No. 416 this weekend at Darlington Raceway. This No. 31 Chevrolet has been utilized twice this season, at Auto Club Speedway and Texas Motor Speedway.
#39- Ryan Newman - Chassis No. 39-733 debuted at Indianapolis Motor Speedway in July 2012, when Newman and his team overcame ill handling and used quick pit work to help engineer a run into the top-10. The crew turned the car around in just a couple of days and took it to Pocono Raceway, where it finished sixth. Two weeks later, the chassis was back on track at Michigan International Speedway in Brooklyn, where it finished eighth. The chassis earned its first top-five finish at Chicagoland Speedway in Joliet, Ill. The chassis next raced three weeks later at Dover International Speedway. The chassis made its last start of the 2012 season at Kansas Speedway in Kansas City in October, when Newman was involved in an incident that forced him to retire from the event prematurely. Chassis No. 39-733 was outfitted with a new front clip and a Chevrolet SS body, and saw its first laps of the 2013 season at Kansas last month, where Newman finished 14th.
#43- Aric Almirola - The No. 43 Smithfield Ford team has prepared chassis No. 839 for Darlington. Almirola drove chassis No. 839 at Auto Club Speedway in March where he drove from a 23rd starting spot to finish 14th.
#48- Jimmie Johnson - Johnson will drive chassis No. 728 at Darlington. Chassis No. 720 serves as the backup.
#99- Carl Edwards - The No. 99 Geek Squad Ford Fusion team will unload Primary chassis RK-806 for the weekend, which last ran in Bristol for the Food City 500. Backup Chassis: RK – 831 was last taken to Kansas as backup chassis.
- Reported in Team News/Press Releases