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More 2021 End of Year Stock and Super Stock Horsepower Adjustments/Corrections Announced

Stock/SS Horsepower Changes   complete for 2nd half rating period 2021

 

Engine Make     CID     OEM HP   NHRA HP   New HP     Years affected

 

 

Chev              350       240       270       266         1989 Camaro Stk

 

Chev              427       425       484       479         12-13 COPO Stk

 

Ford               302       350       350       345         2013 Cobra Jet SS auto

 

Ford               302       350       350       345         2014 Cobra Jet SS

auto

 

Pont               455       290       340       335         73-74 Firebird Stk

 

Pont               455       290       345       335         73-74 Firebird Stk








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