Undy...Keith was right on the money for a hydraulic roller cam fitment (obviously, since da man's a guru)...those cams come with hardened steel on the cam gear, so an iron gear won't eat them up.
The problematic fitment is the solid rollers for FEs...unlike more common installations like CSB and CBB, the cam grinders don't have hardened steel for the cam gear on solid rollers (or maybe they're getting to it), so a sacrificial distributor gear needs to be used to protect the more asspensive cam...which is where bronze cam gears come from. Production-wise, the solid roller market for FEs is relatively small. Again, Rick has been using a poly-something distributor gear for a solid roller fitment which shows extreme promise (I haven't heard him yell about breaking it yet), but it's still relatively a new approach in the bigger scheme of things.
So...hydraulic rollers...no problemo. Solid rollers...ya takes your chances. I have a collection of worn bronze gears on the shelf behind me from my solid roller days...make for unusual (and knife-sharp) paper weights.
