408 roller cam?

Sticking with solid roller cams (regardless of reasons to run one, not to run one) and using Howard’s as a supplier example, they have a set of their Max Effort (98541) springs for solid rollers that will work with up to about .600” lift and about 253°@.050 (285°adv) perhaps even a smidge more duration. Plenty big enough lobes to be able to run lower 11’s if not into the 10’s and run around on the street more than comfortably with longevity. Max power/rpm’s in the 6500+/- range.
Springs showing 180# seat and 465# open. Use axle oiling rollers and rest easier on the street. It can be and is being done.