Qualifying with no AHFS

[Mike Pearson]

Originally Posted by JeremyDuncan

Traditional Super Stock never has had the 250lbs adjustment rule.

Use to be you could run your natural class and next heaviest. If your car's natural class fell in the middle your were not allowed to go to the bottom of the class.

Per your previous example Shipping wt of 3379 ÷ by hp factor of 300= Power to weight factor of 11.26. Natural Ss/J car. Minimum wt. for Ss/J would be 3379 + 170 for driver 3549lbs rounded down to nearest 5lbs. 3545lbs Ss/J minimum. Or you could move down to next heaviest class. SS/K 300hp x 12lbs class plus 170lbs for driver. SS/K min. Wt. 3770lbs.

This is why you saw more diverse cars in traditional SS then present day because some different models of cars "Fit" classes better than others.

It was a complicated system. So NHRA changed it to you could go to the bottom of your natural class or one class heavier.

Stayed that way for about 5 years. Then it was changed to traditional SS can run their natural class, next class heavier, and next class lighter. You can go to bottom of class.

Most traditional Super Stock cars can not move up and down from their natural class especially in the full pound classes due to the amount od weight needed to be removed or added. in a 300 hp combo to move one class up and one class down in a full pound class would be a 600 lb swing from one down to one up. A half pound class would be 300 lb swing which is somewhat doable