NHRA Releases Constant Aviation NHRA Factory Stock Showdown Rule Amendments

Jul 2, 2021
2 min read

Changes are highlighted below in yellow.

SECTION 11B: NHRA FACTORY STOCK SHOWDOWN, DESIGNATIONS (Page 13)

DESIGNATIONS

Designation: FSS

Reserved for 2008 and newer Chevrolet COPO, Dodge Drag Pak, and Ford Cobra Jet with the following factory production engine of the same make. Year of engine optional. Only those engines and/or bodies listed in this section are eligible for the Factory Stock Showdown.

Minimum weight for all pre-2019 Chevrolet COPO and Ford Cobra Jet combinations 3,450 lbs. except for all Ford Cobra Jet combinations with 2.3L Eaton superchargers 3,275 lbs.

Minimum weight for the 2015 Drag Pak combination 3,500 lbs.

Minimum weight for all 2019 and 2020 Chevrolet COPO, 2021 Drag Pak and 2019 Ford Cobra Jet combinations 3,575 lbs.

Maximum weight on all combinations 3,600 lbs.

Note: NHRA may make adjustments to (minimum weights, supercharger pulley ratios, etc.) at any time to control performance and maintain parity within the category.

Permitted Combinations:

All previously approved Factory Stock Showdown bodies are eligible to be used with the approved engine combinations listed below. Engine must be same make as body.

2017-2018 Camaro COPO 350