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More 2018 End of Year Stock and Super Stock Horsepower Adjustments Announced

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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