Short Fields in Both Classes?

[Toejam]

How do you propose this to be done on a supercharged motor?

When they first looked at slowing cars down several years ago, a restrictor plate was the first solution thought of. It was tested on a well know engine manufacturer's blower dyno and the blower made more boost with the restrictor on top than it did without.

Set back manifolds have an intake opening about the size of a 4 barrel carb manifold.

So you restrict the overdrive. Look at classes that have done this and you will see that a lot of the quickest and fastest cars are not overdriving their blowers to the limit. Why? Because blower science has advanced tremendously to the point that they are very efficient and the lower the overdrive the less power you loose to driving the blower.

Restricting the fuel volume will force the tuner to restrict the air flow into the motor to an amicable amount. The cars that will suffer the most are running them like Jim Dunn where they are pulling the motors down to 6500 rpm in the valley. The quick cars right now do not go below 7700 rpm at any point in the run. Restrict the fuel or air, and you will see a rise in these rpms which will create more fuel and air out of the restricted pieces.

Virgil, supposing NHRA went with your suggestions on rule changes; Single Mag, 30% Blower and a 4 disc clutch! What GPM would they be able to flow at to make Maximum Horsepower???