408 hyd roller, too much spring pressure?

Might be a loaded question, but… IF a person was to experiment with this lifter, & take the hydraulic insides out and replace with something to make it a solid roller lifter, would that increase the spring loads it would be able to take?
I don’t know how much abuse the roller wheel axle could withstand either, should something like this be attempted…

That's a good question. I don't know it the limitation is in the hydraulic parts or in the roller itself.
I have heard somewhere that hydraulic roller camshafts have other style ramps, demanding very small lash settings if used with solid lifters.