Meaning it has the same chamber shape as the old Hemi, and not the wedge chamber like a Hemi99.
Actually, the chambers are not shaped like the old hemi. They are not hemispherical at all.
If you look at how the individual scallops around each valve deshroud with lift you'll find it's done to mimic the intake diffusion patterns that a 426 does so well. You don't throw away what works. Making the chamber a full bowl shape would add a lot of volume while disturbing the intake flow. This is due to the valve angles. If it were a full bowl shape the chamber would be too flat. If this was good we'd all have 409 chevys. The new hemis are how a narrow valve angle hemi is done if you want it to run like one. Everybody can call it what they want. As far as what matters, it's a hemi.
