More 2018 End of Year Stock and Super Stock Horsepower Adjustments Announced
- Jan 22, 2019
- 1 min read
Stock/SS Horsepower Changes complete for 2nd half rating period 2018
Engine Make CID OEM HP NHRA HP New HP Years affected
Chev 327 250 261 257 1968 GT RWD
GM 350 160 279 275 1978 Firebird
GM 350 210-225 289 285 1987 GT FWD
GM 350 210-225 275 290 1987 GT FWD
Chev 400 175 315 311 74-76 GT/RWD
Mopar 340 275 315 311 1971 Demon
Mopar 383 325 285 281 1965 Belvedere
Mopar 383 325 285 284 66-67 Belvedere
Mopar 426 425 435 434 70-71 Challenger
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