I don't have much faith in the current hydraulic roller lifters for BBM, primarily wrt RPM capability. I'd go w/ a solid roller and make sure the lobes are designed for street durability. Those generally don't require as much spring loads as typical race lobes, either.


2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)

1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)