What was the most powerful musclecar?

Hello We had a little us car meeting recently and there was one with a ́cuda with it converted to Hemi. Then the discussion came on which musclecar was the strongest which was running serially from the band. I was of the opinion that it was the Chevelle SS 454. But I don’t know so much about it. Can anyone of you tell me that ? Would super. Thanks in advance, Martin