| Teams 2004 Sam's Town 300 |
|---|
| No. | Team | Driver | Mfg |
|---|---|---|---|
| 00 | Haas CNC Racing | Jason Leffler | Chevrolet |
| 0 | JD Motorsports | Jimmy Kitchens | Chevrolet |
| 1 | Phoenix Racing | Johnny Benson, Jr. | Dodge |
| 2 | Richard Childress Racing | Ron Hornaday, Jr. | Chevrolet |
| 2 | Bryant Stith | Hermie Sadler | Chevrolet |
| 4 | Biagi DenBeste Racing | Mike Wallace | Ford |
| 4 | Jerry McClure | Eric McClure | Chevrolet |
| 5 | Hendrick Motorsports | Kyle Busch | Chevrolet |
| 6 | Tommy Baldwin Racing | Paul Wolfe | Dodge |
| 8 | Chance 2 Motorsports | Martin Truex, Jr. | Chevrolet |
| 9 | Roush Racing | Matt Kenseth | Ford |
| 10 | JD Motorsports | Jason Schuler | Chevrolet |
| 12 | FitzBradshaw Racing | Tim Fedewa | Chevrolet |
| 14 | FitzBradshaw Racing | Casey Atwood | Chevrolet |
| 16 | Day Enterprise Racing | Justin Ashburn | Chevrolet |
| 18 | Joe Gibbs Racing | J.J. Yeley | Chevrolet |
| 20 | Joe Gibbs Racing | Mike Bliss | Chevrolet |
| 21 | Richard Childress Racing | Kevin Harvick | Chevrolet |
| 22 | ppc Racing | Jason Keller | Ford |
| 23 | Bill Davis Racing | Kenny Wallace | Chevrolet |
| 24 | GIC-Mixon Motorsports | Mike Harmon | Chevrolet |
| 25 | Team Rensi Motorsports | Bobby Hamilton, Jr. | Ford |
| 27 | Brewco Motorsports | Johnny Sauter | Pontiac |
| 31 | Ted Marsh | Dave Blaney | Ford |
| 33 | Andy Petree Racing | Paul Menard | Chevrolet |
| 36 | DCT Motorsports | Steve Grissom | Chevrolet |
| 37 | Brewco Motorsports | David Green | Pontiac |
| 38 | Akins Motorsports | Kasey Kahne | Dodge |
| 46 | Lewis Motorsports | Ashton Lewis | Chevrolet |
| 47 | Frank Schwantz | Robert Pressley | Ford |
| 49 | Jay Robinson Racing | Derrike Cope | Ford |
| 51 | Rick Ware Racing | Shane Sieg | Dodge |
| 55 | Robby Gordon Motorsports | Robby Gordon | Chevrolet |
| 59 | Frank Schwantz | Stacy Compton | Ford |
| 60 | Roush Racing | Greg Biffle | Ford |
| 66 | Rusty Wallace Racing | Billy Parker | Dodge |
| 77 | Moy Racing | Donnie Neuenberger | Ford |
| 82 | FitzBradshaw Racing | Randy LaJoie | Chevrolet |
| 87 | NEMCO Motorsports | Joe Nemechek | Chevrolet |
| 88 | NEMCO Motorsports | Jeff Fuller | Chevrolet |
| 96 | Ortec Racing | Gus Wasson | Chevrolet |
| 99 | Michael Waltrip Racing | Michael Waltrip | Chevrolet |
| 127 | Braun Motorsports | David Stremme | Dodge |