To advance or Not

I believe the reason for the solid lifter instead of hydraulic is so when you are rotating/degreeing, there is no "give" with the solid lifter. There is "give" or preload with a hyd lifter.
Somebody correct me if I'm wong.

RAT ROD AL said

I was reading and it says if it's a hyd cam I would need to get a solid lifter and an adjustable push rod to degree it also ?????

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