If you are building an engine today (~2023), Professionals are not building Hydraulic FLat Tappet camshaft engines? Don't try?

Max1196 said

That is out of a BBC, Gen7 engine, 604 cid. This was in what's called a "gen-set", which is a stationary power plant. That would run day and night for years at near 2000 rpm. It had 1.3 million hours on it, which is about the same as 780000 miles.

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Same engine that the cam came out of from my pics above in post 56. I have a turbocharged gen7 8.1 in my daily with almost 600,000 miles and two more in service at work. One of my favorite engines I’ve ever had. Curious, what rockers are on the stationary gen set engines?