Solid roller cam with decent spring pressures, 250+ lbs. on the seat and 600 + Lbs. opened on a mild lobe, I shoot for .060 at the closest on the intakes and .080 on the exhaust
I've ran them with more than that clearances with no visible closeness on the piston top carbon at or under 7500 RPM, less than .050 I see near witness marks on the carbon
This is on a automatic car, not a stick shift motor