I can't help with the year of manufacture but there should be a number stamped into the driven gear (the one that engages the transmission). With that number you should be able to come up with the transmissions it will fit.

If it is a double gear PTO then the driven gear may be changed to fit a wider variety of trans makes & models. Spicer and Chelsea are (were anyway)the same brand. Did you call the local Powerdrives dealer in your area for info? Most of them have a lot of the older application books.


1953 Chevy 5-window 3100
In the Stovebolt Gallery
More pix on Picturetrail

Dave
Engine & Driveline Moderator

If you can't make seventy by an easy road, don't go. ~~ Mark Twain