Don't want to rattle any of you "chain fans" but I've found that a 2"X20' tow strap wrapped 3 times around the front, middle and rear of the block, with both loops through the lift hook, will get the job done with fewer problems.
There's no question that the strap will support a 650 pound block and you're not going to be scaring things up....the block can be installed with everything added without concerns about the chains breaking up manifolds, valve covers, distributor, and anything else you want to bolt on with the engine out of the chassis.
I tie a light rope around the strap, just under the eyes which keeps the engine from rotating. I have a leveler but have found that the block can be moved in the strap and you don't have to deal with the extra height.
Once you use the strap you'll see what I mean.
Dave
