My 422 smallblock build

512Stroker said

Those sure do look like hydraulic rollers with the retainer snap ring.
I would take one apart
They may have shipped the wrong ones.

Click to expand...

All the solid lifters I have looked at have that snap ring on the top insert. Not sure if it is for ease of manufacture or rebuild-ability. Maybe they can use the same outside body and different guts for solid and hydraulic.