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Originally Posted by Jamo
Having read your post, I suppose that's true re the factory mfg cams.
But that's not the case with the solid rollers initially made from billet...they called for the bronze gears (again, being the cheaper and easier to replace element). Even now, by using an iron gear, I would want it to wear out before the flat tappet cam gear does.
Matching hardness or softer distributor gear is ok...not harder.
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It is my understanding that this crane "steel" gear is a ?powdered metal gear, with bronze impregnated with the steel, specifically made for billet cam gears, so you don;t have to keep changing the bronze gear. This gear I believe was specifically designed with that in mind, to be compatable with billet cams when in the past only the bronze gear was available.
I'm not sure about a polymer type gear for durability. I'd use the crane.
I had thought that all flat tappet cams were basically cast iron blanks, compatable with cast iron distributor gears, not to be confused with the typical solid roller type..