Mechanical Cooling Fan broke during 6000 rpm burnout.

In my aging recollection, most of the old school originals were steel. Some of them were pretty darn heavy

I HAVE seen at least one come apart. About a 67 GTO had a hole in the hood looked sort of like an axe blade--from the inside. Yup. Fan blade

ok maybe it was just the 7 blades cuz all the ones we use on our SS hemi darts are i think 7 blades but aluminum... original w/Chrysler part numbers