This was back when nearly 10 cars would fail to qualify for the season-opening race. This particular team was in danger of failing to qualify. That gap allowed more air to flow into the engine and create more horsepower. They did. That led to the use of restrictor plates. They also were used for a time in what is now the Xfinity Series. With an inspection process less stringent years ago than it is now, teams found ways to harness more horsepower despite the restrictor plates.
Sometimes it was quite elementary. The rules package mandates those same-sized spacers at all tracks less than 1. That includes Daytona and Talladega, but won't take effect until after Sunday's season opener.
NASCAR's expectation is that reducing horsepower — in connection with a larger spoiler that creates more downforce — will slow the cars down, lead to more stability for drivers and produce tighter racing. We can't get away from it. You know how it is when you're on the highway and they check up right in front of you. You can't stop quick enough and you're only going 70, you know? Try going Game changes a little bit. The two race tracks that require the usage of restrictor plates Talladega and Daytona are widely considered to be among the most challenging tracks in all of NASCAR.
Drivers cannot rely solely on speed during these races and instead must drive strategically and patiently at times in order to secure a victory. All in all, restrictor plates have definitely changed the landscape of races at Talladega and Daytona.
At the time of Allison's horrific crash in , the top speed recorded by a car was miles per hour. Since the implementation of restrictor plates, top speeds have dipped to a much safer threshold below miles per hour, with the top speed of most recent Talladega winner Kevin Harvick sitting at miles per hour. Previous Next. Table of Contents.
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