LJS here is a pic of my Hydra-Matic tag The CH54 refers to the year I believe... Mine is in a 1954 3104... I have not seen a transmission cast identification web site like there is for engine blocks...

To post pics here you have to have them on an off site host like one of these ... Once your pics ore on the host site you need to be in the Full Reply Mode... Select the Icon next to the Smiley Face and a pop up will appear, then copy and past your link address and click OK ( make sure you are not logged in on your host site, you must be in Guest Mode or your link address will not work) then a new pop up will appear, give your link a name/title click OK and your set...


1954 Chevy 3104 3 Window Hydra-Matic in my family for over 60 Years

Once in a while you get shown the light in the strangest of places if you look at it right... "Scarlet Begonias" Grateful Dead 1974