My sons old Duster cryo cam install

Just my experience….never seen a solid cam install in my circle fail if three conditions are met. Have never pulled inner springs either.
1. lifters spin freely in the lifter bores…if they don’t, your going to have trouble
2. Use the lifters with the oil hole on the face..great extra insurance
3. get the engine to fire up in short order after the cam install, and immediately bring it up to 2500 rpm or so and let it run for 15-20 minutes like that.
This all assumes use of quality cam lube liberally applied to the lobes.