He's on a hydro roller though ^

With smaller diameter spring, ti retainer I would guess somewhere in the 180/425 range.

I've ran more on hydraulic roller but can start tracking/damaging the cam if a 5150 core

69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700