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.
No it's not.
65ft lbs
75 Ft LBS.
a small block 350 chevy
A small flywheel needs to stay with the starter that goes to it. You can use either flywheel, and the block should be drilled for either starter.
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.