Cam Choice

What are your thoughts on dumbells with say .550 lift? I thought I had read that sometimes that wide oil band could be exposed and cause a drop in oil pressure.

Of course with a slant 6, that's irrelevant, since the lifters have no pressurized oil.
The base circle, the counter bore atop the lifter bores will decide that.
Buy one single lifter and test it.
Hear say is good but not definitive.
When nothing is perfect...it leaves a small margin of 'chance' in a case like that.