Apples to oranges comparison. Or, more appropriately, small blocks to big blocks. I have a 1970 Gran Coupe vert with a 1976 Chrysler 440. Re-gasketed with thicker head gaskets. That engine factory would've been a real 7.5 to 1. I've measured it. Has headers, an Edelbrock Performer RPM intake, 750DP, 2000 convertor, 4.11 gear, 28 tall rear ET Street Radial. Best E.T. to date is a 13.66. Best MPH is 100.6. Not achieved at the same time. Oh, yeah. Forgot. I run that"worthless" Whiplash cam.
