Sorry, I should have been more clear. The plan was to place straps, such as cargo or boat straps, around the engine, and attached to the hoist, in addition to the engine hoist chains, as both a backup to the chains themselves and a method of stabilizing the engine. I had thought this was common practice.
Anyway, thanks for the advice. As for the mounting points for the chains, originally we had thought to use the motor mount point located on the rear-bank valve cover as one of them, but that is close to the middle of the engine (lengthwise), and I am also not to comfortable with the weight of the engine being supported by the valve covers, or the heads for that matter. I would prefer to find adequate mounting points on the block.
By the way, does anyone have an estimate of the weight of the 81 308 GTSi motor? This is the four-cam, two-valve motor.