May 3rd 1987
The late Davey Allison recorded his first NASCAR Winston Cup victory at Talladega, Alabama, driving his Ford Thunderbird. The very day and in the same race his father, legendary Bobby Allison suffered a near fatal crash.
After the crash, NASCAR made the use of restrictor plates mandatory in all cars.
Source:
The History Channel
Daveyallison.net
nascar.com
Wikipedia