The NHRA Technical Department released Horsepower changes December 12, 2023 after review and evaluation of written requests from Lucas Oil Sportsman Series competitors. All changes are effective January 1, 2024. Only those requests received by November 14, 2023 were considered during this scheduled evaluation. Any requests received after November 14, 2023 will be reviewed during the next scheduled evaluation of 2024.

Letter review is part of NHRA's commitment to evaluating input from the Sportsman racing community and is an important element of NHRA's Automatic Horsepower Factoring System.  “No Change” combinations are listed so that competitors may see that requests were reviewed by the Technical Department, even though the request resulted in no change.

         Requests for horsepower changes or reviews can be made here www.nhraracer.com/ahfs.asp.  Requests for reviews must be received no later than November 19, 2024 to be included in the next scheduled horsepower and index review.

 

Stock Horsepower Changes

Engine                  OEM         NHRA      New

Make          CID     HP            HP          HP          Years Affected

 

GM             138     115-120    103         100         92-94 Achieva

 

GM             173     120-135    125-130  120         1986 Cavalier

 

Chev           327     250           237         232         1968 Chevelle

 

Pont           455     335           325         320         71-72 Tempest

 

 

Note: See class guide for specific details

 

 

 

 

 

 

Stock Horsepower No Changes

 

                                        OEM       NHRA

 

Make             CID           HP          HP             Years Affected

 

Chev              305             165         230            1983 Camaro

 

Chev              350             300         286            1970 Nova

 

Chev              427             430         445            1969 Camaro

 

Chev              427             425         479            2012 COPO

 

Chev              454             425         414            1971 Chevelle

 

Chev              572             500         500            2023 COPO

 

Plym              273             180         159            1965 Valiant

 

Dodge            318             150         230            1978 Aspen

 

Plym              340             290         304            1970 Cuda

 

Plym              426             430         425            1969 Roadrunner *

 

Plym              440             375         335            1967 GTX

 

Ford               281             260         260            1999 Mustang

 

Ford               302             139         150            1978 Fairmont

 

Olds               455             365         350            1970 442

 

Pont               364             400         391            05-06 GTO

 

 

 

 

* = no such combination listed in the class guide.

 

 

 

 

Super Stock Horsepower Changes

 

 

                                    OEM       NHRA     New

 

Make              CID        HP         HP         HP                       Years Affected

                                    

GM                  173        120        150        120         1986 Cavalier/Cadi

 

GM                  231        200        155        150          95-02 Camaro

 

Chev               283        245        245        240          1957 Big Car

 

Mopar             440        375        356        351          68-69 Dart

 

Ford                302        350        340        335         2014 Cobra Jet

 

Ford                281        235        235        232         2010 GT/RWD

 

Ford                302        325        285        281         2012 GT/RWD

 

 

Note: See class guide for specific details

 

 

 

Super Stock Horsepower No Changes

 

                                    OEM      NHRA

 

Make              CID       HP         HP                       Years Affected

 

Chev               396        375        391                       1969 Nova

 

Chev               325        303        303                       2007 GT/RWD

 

GM                  350        300        319                       1991 GT/FWD*

 

Chev               350        360        330                       1970 GT/RWD

 

Chev               427        425        425                       2012 GT/RWD

 

Dodge             318        155        230                       1980 Aspen*

 

Mopar             340        290        335                       1970 Challenger

 

Dodge             383        300        280                       1965 Coronet*

 

Plym               383        300        300                       1971 Cuda

 

Dodge             413        385        390                       1962 Dart

 

Plym               440        375        356                       1970 Cuda

 

Ford                289        271        271                      64-65 Mustang

 

Ford                302        143        153                       1972 Maverick

 

Ford                302        350        340                      2013 Cobra Jet

 

Ford                427        410        410                       1967 Fairlane

 

 

* = no such combination listed in the class guide.