The 1966 Firecracker 400 was a NASCAR Grand National Series event that was held on July 4, 1966, at Daytona International Speedway in Daytona Beach, Florida.[1]
Forty-six Thousand two hundred fans would attended this event.[1] It took two hours and thirty-six minutes to finish.[1] Four cautions slowed the race for 23 laps.[1] The average speed of the race was .[1] Sam McQuagg would beat Darel Dieringer by one minute and six seconds.[1]
This was the first time that a rear spoiler would be used in any NASCAR Cup Series race.[2] On the day of the race, the factory engineers at Dodge would install this new invention on McQuagg's car (which caused him to go several miles per hour faster than his opponents).[2]
Individual winnings for this event ranged from the winner's share of $13,600 ($ when considering inflation) to the last-place finisher's share of $350 ($ when considering inflation). A total of $55,105 was handed out to every driver ($ when considering inflation).[3]
| Grid | Driver | Manufacturer | Owner | ||
|---|---|---|---|---|---|
| 1 | 12 | LeeRoy Yarbrough | Jon Thorne | ||
| 2 | 43 | Richard Petty | Petty Enterprises | ||
| 3 | 13 | Curtis Turner | Smokey Yunick | ||
| 4 | 98 | Sam McQuagg | Ray Nichels | ||
| 5 | 99 | Paul Goldsmith | Ray Nichels | ||
| 6 | 56 | Jim Hurtubise | Norm Nelson | ||
| 7 | 31 | Don White | Ray Nichels | ||
| 8 | 5 | Mario Andretti | Cotton Owens | ||
| 9 | 3 | Buddy Baker | Ray Fox | ||
| 10 | 71 | Earl Balmer | Nord Krauskopf |
† signifies that the driver is known to be deceased