Need Help Decoding 727 Transmission Numbers

[ChargerPilot]

Hi,
These are the numbers on the 727 transmission in my 1966 Charger. Can someone help me decode them and tell me when it was assembled?
Thanks in advance,
Ken

 

[monaco66coupe]

2538389 conforms to 1966 B body 426. I don't believe 3179493 is a part number.

 

[ChargerPilot]

2538389 conforms to 1966 B body 426. I don't believe 3179493 is a part number.

Thanks monaco66coupe that's a big help. I would still like to know what the 3179493 numbers mean.

 

[66coronet500!]

Anyone tell me what year this is

 

[Molloy426]

2538389 conforms to 1966 B body 426. I don't believe 3179493 is a part number.

3179493 is a sequence number.

 

[Molloy426]

View attachment 1296332
Anyone tell me what year this is

early 66