I'm going to carefully step around the
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above and state exactly what I know on this subject:
1. There are no BBM / 426 Hemi billet cam cores w/ cast-iron gears pressed on available from any core source.
2. Although there have been cast cores used for performance roller cam applications for other brands, they have been given the
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by many engine builders because they don't hold up as well w/ the higher spring pressures that go along w/ those applications. You can do a search on cast roller cams on SpeedTalk.com to see some examples of this.
3. The only choice I have seen offered for hydraulic or solid rollers w/ a BBM or 426 Hemi is a billet steel cam that requires using the bronze distributor drive gear. I'm not thrilled about that either, but it is what it is at this time.