engine cast date info

Oldmopardude:
Thank you for your information. I believe the info is solid. My 383 GTS has a transmission that is original to the car but it is now running a built 440. I wanted to find a 383 with a fairly good casting date match. Your information will be very helpful. From your info the engine should be an A body 383 cast about 2 1/2 months before the car was built, roughly.
Thank you
BTW I have a 68 340 4 speed GTS and a 68 383 Auto GTS. They are not perfect but they are both great cars to have.