I'd like to practice and test for rocker geometry and pushrod length on this 355. Richard was nice enough to shoot me a You Tube link on these concepts and the video seems to be pretty straight forward. I don't have a cam card on the 275 DEH but 12-209-2 PDF is what I've been referencing for specs (such as when I degreed the cam a few weeks ago). The video speaks of needing to know my gross valve lift to make the proper calculations so I can make the proper amount of turns on the adjuster nut. Would anyone know the gross valve lift on this cam or would I need to call Comp? Thanks Bobby,