Don't "wrap" a chain "around" anything.
Find bolts that are at least 1/2"(10mm), and connect a chain to those bolts. You may need longer bolts. That's what Home Depot is for.
You want to connect to the block or the tranny. If the engine has support braces, those are good places to connect to.
Note: Do not connect a chain to the intake or the timing cover. The stress and chain could crack/damage either of those.
I've attached pictures from when I did the head gasket, and the crank and rod bearings, on my '94 Achieva DOHC Quad4. You can see that I used muffler clamps over the bolts, to make things easy.
The engine had ~190K miles on it at that point. So, I decided to replace the crank and rod bearings at the same time. The bearing replacement, and having to drop the oil pan, is the reason I needed to use the engine support bar.
Note: For just a head gasket change on a Quad4, an engine support bar is not needed.
If I was dropping the sub-frame, then I would have used a chain.
Make sure that the engine brace can not tilt or fall.
The top picture shows how I used a scissor jack to re-position the engine, when I was reinstalling an engine mount.
The bottom picture shows how the engine support brace fit over a bolt on the strut tower. That kept the brace from moving.
Good Luck!