Truth about roller cams.... BEFORE you make the switch......

dartfreak75 said

I do not understand the whole hardened intermediate shaft and gear thing. Why would a aftermarket cam especially a roller cam be harder to turn the oil pump? If a factory original cam can turn the oil pump without breaking why does a aftermarket cam change that?

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Two different topics.
Hardened shaft is so the tip and shaft are stronger and are less likely to break.
Melinite hardened gear is to keep the camshaft gear from eating away at a non-compatible intermediate shaft gear, regardless of pump used.
Melinite gear supposedly does not last as long when used with high volume pump.