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:
#1- Jamie McMurray - Crew Chief Kevin “Bono” Manion and the No. 1 Bass Pro Shops/Mercury team will bring Chassis #1104 to Bristol. This chassis was raced in 2011 at Charlotte for the All-Star race, finishing 17th; the Coca-Cola 600 finishing 37th; both Michigan races last year, finishing 19th and 23rd; Dover, finishing 15th. Earlier this season Chassis #1104 has seen action at Texas, finishing 14th; and Dover, finishing 19th.
#2- Brad Keselowski - The No. 2 Miller Lite Dodge Charger team will race chassis PRS-816 during Saturday night’s Irwin Tools Night Race at Bristol Motor Speedway (BMS). Brad Keselowski last raced this chassis to a 12th-place finish at Dover International Speedway in May. It has been updated to the current Penske Racing specification.
#5- Kasey Kahne - For the Aug. 25 race, crew chief Kenny Francis and the No. 5 team will unload Hendrick Motorsports Chassis No. 5-713. Kahne recorded an average finish of 9.7 when racing this car earlier this season in Fontana, Calif., Fort Worth, Texas, and Darlington, S.C. He also qualified inside the top five at each event.
#9- Marcos Ambrose - The No. 9 RPM team has prepared chassis No. 743 for this weekend's NASCAR Sprint Cup Series Race at Bristol Motor Speedway. This DEWALT Ford was run previously this season at Bristol and Darlington.
#14-Tony Stewart - Chassis No. 14-708: This car debuted in May in the Southern 500 at Darlington Raceway where Stewart rallied Chassis No. 14-708 from its 17th-place starting spot to finish third. Its second and most recent 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 of the 400-lap race around the 1-mile concrete oval. With new sheet metal all around, Chassis No. 14-708 returns to the concrete for its third career start in the night race at Bristol Motor Speedway.
#15- Clint Bowyer - Primary chassis No. 724 has raced twice in 2012. It started 16th and finished fourth at the spring Bristol race and started fourth and finished fifth at Dover. Backup chassis No. 712 finished 30th at Phoenix after multiple cut tires put the car several laps down. It served as the backup at New Hampshire.
#16- Greg Biffle - Primary: RK-807 Last ran Dover – finished 11th
Backup: RK-803 Last ran Pocono – finished 15th.
#17- Matt Kenseth - Primary: RK-802 (Last raced at Loudon).
#22- Sam Hornish Jr. - Hornish and the Penske Racing No. 22 Team will be utilizing their "PRS-817" Shell-Pennzoil Dodge Charger this weekend at Bristol. This is the same car that AJ Allmendinger raced in the March 25 race in Fontana, Calif. (started 25th and finished 15th) and again in the June 3 race at Dover, Del. (started 23rd and finished 16th). The "PRS-807" chassis will serve as the backup Shell-Pennzoil Dodge for this weekend. It was in the 22 team transporter serving as the backup at Phoenix, Bristol and Martinsville, but has never seen any track time to date.
#24- Jeff Gordon - Gordon will race HMS chassis #24-712 this week at Bristol, it finished 26th at California, 4th at Texas, 35th at Darlington, 13th at Dover and 5th at Kentucky.
#27- Paul Menard - Paul Menard will pilot Chassis No. 347 from the Richard Childress Racing NASCAR Sprint Cup Series stable in the IRWIN Tools Night Race. This No. 27 Chevrolet was recently utilized at Darlington Raceway in May, where Menard started from the 14th position and finished 13th. The chassis was also used in 2012 competition at Bristol Motor Speedway in March where the Eau Claire, Wis., native started from the 11th position and finished 10th.
#29- Kevin Harvick - Kevin Harvick will pilot Chassis No. 383 from the Richard Childress Racing NASCAR Sprint Cup Series stable in this weekend's IRWIN Tools Night Race. Built new for competition during the 2012 season, Harvick raced this chassis at Phoenix International Raceway in March and Dover International Speedway in June, collecting second-place finishes in both races.
#31- Jeff Burton - Jeff Burton will race Chassis No. 385 from the Richard Childress Racing NASCAR Sprint Cup Series stable in the IRWIN Tools Night Race. Burton has driven this No. 31 Chevrolet four times this season including Pocono Raceway in August (started-23rd, finished-22nd), the Coca-Cola 600 at Charlotte Motor Speedway in May (started-22nd, finished-19th), Texas Motor Speedway in April (started-24th, finished 29th) and Las Vegas Motor Speedway in March (started-22nd, finished 14th).
#39- Ryan Newman - Chassis No. 39-655: Chassis No. 39-655 has three starts to its credit, including one already this season at Bristol (Tenn.) Motor Speedway. Chassis No. 39-
655 took the track for the first time in last season’s Coca-Cola 600 at Charlotte (N.C.) Motor Speedway, where Newman made a run for the top-10 before getting tangled up in a multi-car melee on lap 303. The accident forced Newman to take his No. 39 to the garage for extensive repairs. He returned to the track more than 40 laps down and finished the race 31st. This season, chassis No. 39-655 has become the team’s concrete specialty car. Earlier this season at Bristol, Newman qualified third but finished a disappointing 12th after a tight handling racecar hampered his efforts. He had another third-place qualifying run at Dover in June, but he had to battle back from a pit-road penalty and from being two laps down to finish 15th. Last week, the crew took Chassis No. 39-655 to test at Nashville Superspeedway in Lebanon, Tenn.
#42- Juan Pablo Montoya - Crew Chief Chris “Shine” Heroy and the No. 42 Target team will bring Chassis #1111 to Bristol this weekend. This Chassis made its debut in last season’s finale at Homestead-Miami Speedway, leading two laps and finishing 31st after an accident put the No. 42 four laps down. This season, this chassis has seen track time at Bristol finishing eighth, Darlington Raceway, finishing 27th and Dover, finishing 28th.
#43- Aric Almirola - The No. 43 team has prepared chassis No. 710 for Bristol. This car ran earlier this season at the March Bristol race and also at Dover (Del.) International Speedway where Almirola earned his season-best sixth-place finish.
#48- Jimmie Johnson - Chassis No. 650 serves as the primary for Johnson at Bristol. Chassis No. 669 serves as the backup. No. 650 ran at Bristol in March, finished 9th.
#51- Kurt Busch - Chassis No. 648: This weekend’s Irwin Tools Night Race will be the second race of the 2012 season for this chassis. Chassis 648 is one of the newer cars in the Phoenix Racing fleet. This car is the same the team used at Michigan in early June. The car had been fast during the Michigan practice sessions but a loose-handling issue during the race resulted in Busch making contact with the wall early in the race and the team was never able to get the handling to a manageable position, resulting in a 30th -place finish in the car’s lone start.
#55- Brian Vickers - Primary chassis No. 722 has raced three times in 2012. It started 25th and finished fifth at Bristol in March with Vickers behind the wheel, started 16th and finished 21st in the All-Star race with Mark Martin and started 39th and finished 30th at Kentucky Speedway with Michael Waltrip behind the wheel. Backup chassis No. 708 has severed backup duties at multiple races, but has not raced. It served as the backup at Las Vegas, Fontanta, Texas, Kansas, Darlington, All-Start, Charlotte, both races at Pocono, Dover and Kentucky.
#99- Carl Edwards - The No. 99 Blue Team will unload RK-811 for the weekend. This car first raced at Texas in April (finished eighth), Charlotte in May (finished ninth) and Kentucky in June (finished 20th).
- Reported in Team News/Press Releases