Checking lobe lift

Thanks for the quick info. I guess the best way would be to go about this would be to obtain a used set of valve covers that I can cut a slot in to view the pushrods when the engine is running. Mark the pushrods with a sharpie and look for them to be spinning. If they're spinning the cam should be good, if not then it's worn

Or just bite the bullet and pull the manifold so I can measure the lobes directly. It would be nice to have the reassurance of having an accurate measurement of lobe lift. My simple valve spring project is snowballing in a hurry!