Crane is the only company I know that makes a steel gear that will not wear
out on a 8620 steel billet roller cam, I've used many of them. Comp makes a
composite gear but only for Chevrolets & sb Ford, I don't know if you have a
BB or SB.
A bronze gear will wear out on a steel cam unless your not driving an oil
pump (i.e. dry sump), thats what it's designed to do.
The Crane gear sells for around $60.
Good Luck.
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