Big Inch Small Block

And I am obviously not happy about it after only about 200 runs.. luckily it only took out the front main bearing and nothing else even the rod bearing by the crack still looked good.. Thank goodness it didn't hurt the precious " R " block... I haven't decided what I am going to do fix it, part it out or sell whole.

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I'm curious how you found the cracked crank before it disassembled itself. Was it a main bearing knocking noise, or loss of oil pressure, or something else.?