1966 G/Stock Wars ~ Mopar 273/235 HP ~ Chevy 283/220 HP ~ Ford 289/225 HP

Current NHRA Horsepower Factors

Engine.............................. Stock......Super Stock

Mopar 273/235 HP ............ 210 ......... 230

Chevrolet 283/220 HP ....... 223 ......... 237

Ford 289/225 HP ............... 207 ......... 215