Why the hate for HR cams.

YY1 said

I'm pretty sure it's just a couple of members of the 20,000 or so we have.

Also pretty sure the stock LA roller or Magnum roller lifters are just fine and as a bonus, can be reused no matter the (HR) cam that gets installed.

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It depends on the lobes. The factory lifters were designed for factory lobes. There are HR lobes out there today that piss off all the lifters.

That’s why it’s not worth it to me to run hydraulic lifters on anything, unless the end user isn’t competent to lash valves correctly. Sadly, there are far more in that group than I once estimated.