abnormal spread between block date and body -L_78?

[70-SS/RS-L78]

My 1970 L78 engine was built last week of November 69 and the
car was built first week of June 1970.It is the original engine. For
the limited production cars you will often see a this kind of abnormal
time frame.

[JRSully]

My 70 L78 Nova block has a cast date of A2970 and a build date of 4/24/70 and a car build date of 05B. SULLY

[TimG]

Had a '68 435 vette that was a local, one owner car with a casting date of October 67 and a build date of July 68. It was bult in the final days of '68 production and was the original engine. Why a nine month spread? Who knows, but the original local owner sure didn't know anything about restamping an engine in the late 80's when I bought this car. The engine could have been damaged while being put together and sat for weeks and weeks before being repaired.