Yellow paint on valve body - tranny numbers help

[lukedukem]

i had my car on the lift and was replacing the seal for the shifter linkage and kickdown shaft. and when i removed my valve body i noticed this yellow paint on it. just wondering if anyone knows what it was put there for. is it factory.
i tried to search, but came up with nothing about this.
i need to remind myself to pull some numbers off of my tranny anyway to see what year it is.

luke

P.S. i just relized i posted this in wrong section, sorry. please move for me, thanks

[Cooter]

Factory qc paint dob.  Nubers should be on the pan rail. 

[lukedukem]

   thanks Cooter.

Luke

[John_Kunkel]

Sometimes the paint daubs are to identify the type of VB for the assembler. IOW, in any given year the 727 might use a dozen different VB's and each has to be quickly identified; since they all look alike, they have to be able to ID them quickly. In later years they punched a number in the steel plate to ID them.

[lukedukem]

Can someone help with my tranny numbers. I'm on my iPad so I can't post a pic but here it goes
PK 4028826 5971 8486
Not sure about the two letters. Found these on driver side pan rail.

Luke

[John_Kunkel]

PK 4028826 5971 8486

PK= Plant Kokomo

4028826= Non-lockup 727 from a standard performance 440

5971= Build date December 2, 1977 (a '78 model year trans)

8486= Sequence number, the 8486th built that day

[lukedukem]

thanks john, now how could i tell if the PO stuck a different converter in my tranny, with it still in the car. i looked while changing fliud and filter and saw something blue. being that i'm not a tranny guy not sure if blue is suppose to be there.. i should've took a pic. but just wondering if it has aftermarket TC. thanks


luke