<VV> Transmission numbers
Sat, 28 Aug 2004 12:00:29 EDT
These numbers appear to be a '66 "Saginaw" transmission.
J295 is the date the part was cast at the foundry
J = 9th month or 10th month (sometimes they don't use the letter "i".
29 = 29th day of the month
5 = 1965
This makes this transmission a very early "model year" '66 unit
GM2 is the mold identification number, to help isolate problems to a specific
3859958 and 954 are casting numbers or part numbers.
I looked at a '66 transmission that I have and the side cover is 3859956.
This side cover is used on both 3 and 4 speed "Saginaw" transmissions. Is it
possible that your "8" is actually a "6"?
My transmission has a different case number than yours, 3558964. Again, is it
possible that your "5" is a "6"?
The best way that I know to distinguish a Saginaw 3-spd from a Saginaw 4-spd
is to put the selector shaft in the middle detent (in-middle-out) and see if
you can rotate it into the reverse detent. (you'll need to put a lever through
the clevis-pin hole to do this. I use a little phillips screwdriver for this
test). If you find that you can rotate the shifter through a detent, you
have a four-speed, if not, it's a three speed.
> With tranny closest to you, the front, right
> side GM1, 3859958, below that, J295. Other side, GM2, 3859954