Engine lifting plate

I own, and use that Macs Pivot Plate all the time. Most useful tool I have. Don't worry about the intake, it'll be just fine. I've hoisted an iron headed big block with an A833 iron 4 speed trans bolted to it in a car, with an aluminum manifold. Zero problems. They will hold just fine.

In fact you can see my pivot plate bolted to my aluminum headed small block in my sig pic. lowered that in my A-body with the 4 speed attached to it as well.