69 C10 6 Cylinder Engne Codes Help

[tuskiso]

Originally Posted by bruceman1968

With no optional trans on the SPID, that means it came with the standard trans which was a 3 ott, just what you have. looks to me like you got the original engine and trans. Your numbers suggest that it is. That's a nice truck, Was it military? It's been repainted right? Was it green originally. The interior was. There's no paint code on the spid.
There should be numbers on your trans but they won't help without a PoP. The number will be a M or N for Muncie followed by 4 numbers which is the month and day, and the last digit, if there is one, will be D or N for day or night shift. Nothing that really helps. Nice Truck!

Just reviewing, but have a few more questions:
(1) where will I find the numbers on the transmission ..?
(2) what is a "PoP" ?

Thanks again