A little bit hard to tell from your picture, but that may just be a casting flaw. Seen similar "cracks" that really weren't. No oil leak would be one good sign. Of course, splitting the cases and observing the inside will tell for sure. My guess is you will be fine. If you're not, the cases can be repaired by a skilled welder. Good luck! Chuck
Thanks guys,
Was hoping to not have to tear all the way down...
Do these help diagnose any better?
I'll tale the block into my local guy...
As you, he's not too worried even if they are cracks.
Will let you know.
Some spider cracks and hopefully better images...
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