Adjustment - Factory Stock Showdown
 

From the NHRA tech department.....

NHRA Technical Department Makes Parity Adjustment to the SAMTech.edu NHRA Factory Stock Showdown

Based on SAMTech.edu NHRA Factory Stock Showdown performance numbers from the first race of the 2019 season, the NHRA Technical Department is increasing the supercharger top pulley size on the 2019 COPO 350 combination from 3.350 inches to 3.500 inches and the 2019 Cobra Jet 327 combination from 3.250 inches to 3.500 inches. This will decrease the 2019 COPO 350 combination supercharger overdrive from 147.5 percent to 136.6 percent overdrive or 10.9 percent. Additionally, this will decrease the 2019 Cobra Jet 327 combination supercharger overdrive from 146.2 percent to 128.6 percent or 17.6 percent. As a reminder, no other changes may be made to all approved superchargers, including, but not limited to: (upper or lower pulley sizes, gear ratios, cases, rotors, etc.). All other permitted combinations in the SAMTech.edu NHRA Factory Stock Showdown will remain unchanged. This rule change will go into effect immediately. NHRA reserves the right in the future to make additional rule changes to control performance and maintain parity in the category.

Re: Adjustment - Factory Stock Showdown
 

That didn't take long.

Re: Adjustment - Factory Stock Showdown
 

About how much will they slow down?

Re: Adjustment - Factory Stock Showdown
 

Take off the weight from the DragPaks!

Re: Adjustment - Factory Stock Showdown
 

They all weigh the same.

Re: Adjustment - Factory Stock Showdown
 

I thought they add 25 to drag pak and removed 25 from copo was that rescinded ?

Re: Adjustment - Factory Stock Showdown
 

NHRA Mudding up the water with no actual testing to see the real world results!

Re: Adjustment - Factory Stock Showdown
 

They did for the old combinations - but the 2019 CJ and COPO weigh 3575 - same as the 2015 Drag Pak.

http://nhraracer.com/content/general...434&zoneid=132

Re: Adjustment - Factory Stock Showdown
 

Personally I believe, best way to check combinations is heads up racing. Doing it now will allow future changes if one combination should dominate.
Doing it quickly will keep interest in class.
Also, changing pulley size is probably least expensive thing to change.
Will they have to do a lot of testing, sure, but what top teams are not doing a lot of testing.
Class has basically become Prostock version 2.0 18 wheelers hauling stockers around.

Re: Adjustment - Factory Stock Showdown
 

The big Question becomes who's Sandbaging when and where?