Demon uses a 2.7L blower at 14.5 psi, Hellcat 2.4L @ 11.7 psi. Cams, I’m not sure. I think everything else is pretty much the same Edit:apparently the cam is different. .561/.551. 224/240@.050, 109/137 lobe centers for the Demon. Here’s an Allpar article with the differences: https://www.allpar.com/cars/dodge/challenger/demon-deep-dive.html
