I purchased this used flywheel described as a 360 externally balanced piece,but when I bolted it up to my 360 it vibrated like crazy.It felt the same as the zero balanced flywheel I had mistakenly installed previously.From what I understand the 360 wheels usually have three very large balance holes on the back side about half way out from the center.Any pics or info is appreciated.

thanx
justin

The attachment isn't working.

That is def not a 360. The holes are much larger.

Possibly 360 magnum?

That doesn't look like an LA 360 balance. I have one balanced for an LA360 along the outer edge and there are more than three holes.

The three small holes in the pic are for neutral balance, just coincidence that there's three of them.

Pic below shows the 360, Magnum is on the left.