Roller cam. Hydraulic vs. Mechanical in a 340

JoeSBP said

Would you mind expanding on that? I have hyd. roller in my 418, but I'm fairly ignorant on this topic

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What did you expect from Hyd. roller cam?
Did you compare the lobes (lift rates) between Hyd. & Hyd. roller?
Did you dyno the engine?
Do you rev past 6K?
What is the intended purpose of the vehicle?