Two things. Cracks, and the outer ring. Cracks will occur around the bolt holes for the bolts that attach it to the crankshaft, and around the holes for the torque converter. The teeth on the outer ring, align with the teeth on the starter. You do not want to see shiney spots. These are spots where the teeth are slipping, or, not meshing. You do not want them to be rounded, or sharp. The tops of the teeth should be flat, and even along the length of the tooth. They are not too expensive. And, they can be expensive to change, as you have to pull the tranny to do so. I would take the old one in, and just get a new one. They make different sizes, so take the old one.
No. The 400 is externally balanced, the 350 is internally balanced.
Just the crank. The flywheel is neutral.
remove the enigine and then take out flywheel bolts
No
NO
NO.
yes
No it's not.
65ft lbs
a small block 350 chevy
75 Ft LBS.
About the only thing that can go wrong with a flywheel is for it to crack or loose teeth. In either case, you replace it, not repair.