transmission numbers?

You should have a two letter code before the serial number:

PP= new process
PK=Kokomo plant
Your 7 digit serial 2822963 does not match any thing in the book,recheck it.
Next four digits is the build date:you have Five,why?recheck.If tis 5815 its 6/29/1977 the date of the build.
3603 is the sequence number of units for that day.That tranny was the 3606 unit built that day.

Mrmopartech