Stock/SS Horsepower Changes complete for 2nd half rating period 2020
Engine Make CID OEM HP NHRA HP New HP Years affected
Chev 196 105 112 108 1979 Monza
GM 305 140-145 180 183 76-77 X platform
GM 305 145-180 229-230 232 80-84 G Bodies
Chev 454 225 336 331 1976 GT/RWD
Chev 454 215 336 346 1975 GT/RWD
Mopar 318 150-165 230 236 81-83 Mirada
Mercury 302 140 145 149 1979 Zephyr
Ford 302 150 197 200 1986 Thunderbird
Pont 428 390 312 308 1968 GT/RWD