Why are the rpms higher with the CoT at Daytona and Talladega rather then the old car?

Question

I noticed that the rpms on the old car at Daytona or Talladega got up to only 7000-7500 rpms, but with the CoT, the rpms go up to 8000-8500. Why is that the case? Whould someone please answer?!

Answer 1

They are also running bigger holes on the restrictor plate, which leads to what has already been said, different gear set ups.  The COT produces a ton of more drag than the previous car, so opening up the restrictor plate to give more throttle response was an option for the powers that be.

Answer 2

The increased RPM is caused by the gear required by Nascar.  The cars are turning too much RPM, and most engine builders and/or crew cheifs would rather a different gear, since the high RPMS are hard on the engines and could contribute to engine failure or other problems.  This was part of what the COT was designed to do, and make the driver drive the car again, rather than go along for the ride.

Answer 3

They changed the restrictor plate for the COT, enlarged the Holes. Then Reduced the Gear they could run.

Previously they ran a 3.08 gear, but with this year they are running a 3.60 gear.

The result is more RPM, and more throttle response, this equates to more racing and passing.

At the same time it keeps the speeds down to around 185-190 MPH.

Answer 4

The larger opening in the restrictor plate is the man reason.

Answer 5

Motors are turning higher RPMS every season.  Gear ratios contribute as well.

Answer 6

They push'in more wind ???

Answer 7

The engine is stronger

Answer 8

My guess is that the CoT produces more drag so they "wind up" the engines more to overcome the increased drag compared to the old car.

Answer 9

It really has nothing to do with the car itself. It is just a different engine setup.