Ford 272 C.I. runs low 11's. Why do Mopar guys need 408's?

I personally owned a '63 Fairlane. Fun car, 3 on the tree 170 6 popper
Somewhere I have a video of him With the car completely gutted a driver's seat and him doing a twenty foot long burn out l o l... But the car was drag race light. It didn't have windows seats interior or anything in it. We were just testing the engine and transmission... You could say he was putting it to the test...