5= Year 1965-1975-1985 etc.
The second Number probably has some portion of the Vin Code in it. I'd guess that a very late 1975 built Trans probably is corect for what ever Your body build date is.
Originally Posted by Iggycat2009
My trans has the following numbers on the side of the case and I'd like to them decoded and find out what year and what application this came from. (Did it come from a Corvette?)
This trans came out of my 76 C3;