From what I read searching the ratings on those lifting eyes, they are rated for a working load of 1300 lbs, but I'm not sure that there is enough meat and thread engagement in the valve cover mounting holes to safely support the engine load for lifting. I prefer to remove a couple of head bolts and replace with lifting eye bolts threaded securely into the block like the later 235 shop manuals recommend.
Others with more experience and knowledge should chime in soon.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
