Earliest LS6 Chevelle Block Cast/Assembly date

[mockingbird812]

No desire to stir up a hornet's nest. Don't want to turn this into a bash session for the ebay seller. <u>Just want to learn.</u> Would like to know the earliest known/verifiable cast &amp; assembly date for the LS6 engine. This from the Q&amp;A for this ebay ad :

Q: Do you have a picture of the block stamping? If I am reading it correctly it looks like the car was built 3rd week of Jan and the block was stamped in November 12 ? Sep-07-07
A: You are correct. The block was cast on September 30, 1969 , and the car was built in mid January. The front engine pad converts to Tonawanda, November 12th . It’s the original engine that came with the car … absolutely, 100%, verified, documented and cast in stone. Thanks for your interest and let me know if you have any other questions.

For Rick Nelson: Is this car in the LS6 registry?

Thanks.