4.10 ring & pinion, revisited...GM?...pics

[69Tom]

OK guys, finally got some pics of my 4.10 gears & posi unit. Any ideas what it dates out at? Looks to be GM? Thanks...

pics:
http://i256.photobucket.com/albums/hh180/ATCT_250R/DSC02407.jpg

http://i256.photobucket.com/albums/hh180/ATCT_250R/DSC02408.jpg

http://i256.photobucket.com/albums/hh180/ATCT_250R/DSC02409.jpg

http://i256.photobucket.com/albums/hh180/ATCT_250R/DSC02411.jpg

http://i256.photobucket.com/albums/hh180/ATCT_250R/DSC02414.jpg

http://i256.photobucket.com/albums/hh180/ATCT_250R/DSC02413.jpg

http://i256.photobucket.com/albums/hh180/ATCT_250R/DSC02412.jpg

[69Tom]

Posi:

http://i256.photobucket.com/albums/hh180/ATCT_250R/DSC02415.jpg

http://i256.photobucket.com/albums/hh180/ATCT_250R/DSC02416.jpg

http://i256.photobucket.com/albums/hh180/ATCT_250R/DSC02417.jpg

http://i256.photobucket.com/albums/hh180/ATCT_250R/DSC02418.jpg

[Mr70]

That planetary case was used on any Chevrolet vehicle w/4:10,4:56,4:88 during 1966-72.
Can't make out the date too well,but looks like it's upside down,and maybe I 69,for September 6th,1969.

The ring & pinion go together & were installed on any 1965-69 Chevrolet vehicle w/4:10,and all 1970-72 Chevelle/Elcamino/Camaro w/4:10 too.
Showing a date of January,1970 on it,it most likely came in one of the later,or was sold OTC back then.

[Fast67VelleN2O]

If you look closely, the pinion iis dated December of 1969.

[69Tom]

Thanks guys.

[iluv69s]

I believe the posi would have a date stamped in the edge of the flange that the ring gear bolts to. Should be some single digit letters stamped there.