More 2021 End of Year Stock and Super Stock Horsepower Adjustments/Corrections Announced
- Jan 11, 2022
- 1 min read
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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