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