LT4 build date

[leres]

I knew GM uses a engine build date code sticker so I went looking for mine. In my case used my trusty usb endoscope and found it on rear of the driver's side head, here's a pic from a Corvette:



The date code on mine starts with 2025104... So the year is 2025 and the julian day is 104 or April 14th, 2025.