[madmaxx]

The huge gap with these incompetent idiots is their zero understanding of quality control. The last entity to touch the component prior to the customer has responsiblity to ensure it is delivering what it is advertising. How does GM, Ford, Lexus, BMW guarantee their cam do not fail? When is the last time you heard of a cam failing in a modern day engine? Tens of millions of automobiles are sold annually.

It takes less than 4 minutes to do a hardness test, 20 minutes to do a dye penetrant test. 10 seconds to do a positive material identification test. Cost per cam would be under $5.00 per camshaft. I think I answered my own question on how manufactures prevent failures due to inadequate components.