The NHRA Technical Department released Horsepower changes December 16, 2024 after review and evaluation of written requests from Lucas Oil Sportsman Series competitors. All changes are effective January 1, 2025. Only those requests received by November 19, 2024 were considered during this scheduled evaluation. Any requests received after November 19, 2024 will be reviewed during the next scheduled evaluation of 2025.
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 18, 2025 to be included in the next scheduled horsepower and index review.
12/16/2024
Stock Horsepower Changes
Note: See class guide for specific details
Engine OEM NHRA New
Make CID HP HP HP Years Affected
Chev 265 205 205 202 1956 Full Size
Chev 327 325 300 292 1968 Nova
Chev 327 325 300 292 1968 Chevelle
Chev 327 325 325 292 1968 Corvette
Ford 302 380 380 375 11-14 Mustang
GM 138 115 100 95 92-94 Achieva
Grand Am
12/16/2024
Stock Horsepower No Changes
OEM NHRA
Make CID HP HP Years Affected
Chev 427 430 445 1969 Camaro M/T
Chev 327 300 265 1965 Nova
Chev 402 300 311 1971 Chevelle
Chev 454 425 430 1971 Chevelle
Mopar 273 180 159 1965 Valiant
12/16/2024
Super Stock Horsepower Changes
Note: See class guide for specific details
OEM NHRA New
Make CID HP HP HP Years Affected
Chev 265 205 200 197 1956 Full Size man
Chev 364 361 361 356 2008 GT/RWD
Ford 302 350 335 330 2014 Cobra Jet
Ford 281 235 232 229 2010 GT/RWD
Ford 302 325 281 277 2012 GT/RWD
12/16/2024
Super Stock Horsepower No Changes
OEM NHRA
Make CID HP HP Years Affected
Dodge 318 155 225 1980 Aspen
Chev 396 375 391 68-69 Nova
Chev 376 365 365 2015 GT/RWD
Dodge 426 450 450 09-10 GT/RWD