I'm asking about a 350, but I guess it could apply to any motor:

If you remove all the main caps to roll the bearings, how long can you leave it hanging by just he pistons? It's still on the timing chain and has the tranny stub stuck in the crank end.

I ask because I read somewhere that they'll warp if left with no support.
I'm thinking about 3 weeks until I stick the caps back on.

Thanks,
-B.

Tim, please move this post as you see fit. I didn't know where to put it.