273 crank wanted

Valiant63 said

I have one in a 65 273 engine. Not sure how to ship it to keep it from warping, but $100 if you need it.

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Have you actually had this happen? I've pulled a crank off the shelf after 20+ years of storage and had no problems having it turned. Anyone had a known straight crank get warped just sitting on a shelf or in the short span of being shipped in a box? I've pulled bent cranks out of a block after a bearing failure but I think the storage concern is an old wives tale or have I just been lucky?
Maybe 60+ years ago before they had good alloys it was a problem and the warning just carried forward to the newer forgings without verifying that the problem still exists?

Thanks, Mark