[TimG]

That's interesting because I've heard that GM didn't let long blocks sit too long due to the cost of the completed motor. I would argue that this engine definitely had some problems as an assembaled long block and went to the repair area to be corrected. It could have waited for months to be repaired and finally installed in a a car. It was stamped and the problem could have been disocvered, something like a valve or cam could have failed and it may not have required a complete rebuild.