I sent you a few pics from work.
I will send you a few more tonight before I leave.
Thanks again Casey.
Also here are a few notes on the looking at a #234 posi:
1) springs - natural color / lefthand wind / 0.120" wire diameter / 75#
rating
2) spring plates - narrower and longer than standard plates / round hole for c-clip
* note: early standard posi units also had round holes for c-clips
but are too wide for copo unit *
3) axle gears - 16 teeth / tooth root goes all the way to clutch surface / gear OD has pointed tooth tips / the unit usually has 7 teeth visible
* Don't get cofused by GM 2nd design 17 tooth axle gears. They
appear very similar when inside the posi. *
4) I have found (4) older rebuilt COPO posi units with stock 10-18 & 10-17 tooth spiders sets in them. There will be 3 cup washers behind the smaller pinion gears to get the proper mesh. The case is correct but the guts are wrong.
5) the COPO posi case is cast # EDB 30174 ( same as standard unit) and has different internal machined dimensions to fit the larger gears. All COPO units that I have seen were small window cases.
6) The posi unit assembly date can be stamped on the ring gear flange or on the balancing boss. It will be a letter+number+letter stamp.
I will post more info later.
Should I start a new post with the identification info and date data base or continue it in this one?
Thanks again,
Eric