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Smallblock,
Thanks for all your research on this subject. You have contributed more factual info than was available to we diy owners before this thread was started.
Realistically , how are we going to test the Rockwell hardness of a tappet crown? We have to just hope.
How are we going to measure/compare/understand the radius and concentricity of the crown of a tappet? I have all the old engineers measuring equipment ,but that is a daunting task to perform accurately.
I agree with your short cut of relying on OEM part numbers . And BYprodrivers helpful comments are always reliable. One of us just has to try a specific part number and share the results. The cryptic "I know the secret but I am not sharing it" comments are not helpful. I am glad Markus took the time to share his research and help those who follow.Thank you.
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