8 3/4 Rear Identifcation

[Dana67Dart]

Hello my E-body Brethren!

Just picked up a junk yard 8 3/4. It was in a bone pile so I don't know what it is out of and some of the measurements are not adding up from the various sites that list such. The yard didn't have but 2 mopers in the 60 to 70s range, one was a 68 Belvidere and a 70s duster with tubs neither had a diff in it. Most things add up to 70 to 74 E-Body but...

Breather is up on the hip of the housing not on the flat of the tube.

Large bolt pattern

Left hand threads on left axle

Oe axle bearings

Both axles look identical

Purches under housing

742 with Sure Grip / Power-Loc (editeded for the purest in the group), gears say 12 / 66 for date.

There was no tags on the diff, probably was apart at one time.

Small flange u joint

Drums have springs around the OD

One axle measures 30 inches on the end of spline to out side of wheel flange.
65 to 69 C body or 70 to 74 E body or 65 to 70 A100

One axle measures between 30 1/16 to 30 1/8 end of spline to outside of wheel flange.
65 to 66 imperial?

Housing measures 56 1/2 out side axle mounting flange to outside mounting flange.
70 to 74 E body?

Purch CL to purch CL 46.
65-'73 C BODY
70-'74 E BODY

Brakes are 11 x 2 1/2

What do you all think?

Also everything but the center section will be for sale in a week or so. PM if interested before its posted.

 

[moparleo]

Do you have some good pictures ?
Here is the info on Mopar differentials that I have. Save it for the future :

http://board.moparts.org/ubbthreads/upload2/6316939-70differentialcolorcodes.jpg
Mopar Rear Ends / Differentials / Etc
https://www.forebodiesonly.com/foru...ear_id_jpg_pagespeed_ic_mia0pwdtbi-jpg.16484/
http://www.mymopar.com/downloads/Mopar_Drivetrain_Numbers.pdf
Moparts on the Web - Main Index
Scrounger’s Guide: Buy A Mopar 83/4 Centersection - Hot Rod Magazine

 

[Dana67Dart]

Do you have some good pictures ?

I'll be taking photos this weekend. Thank you for the links, there were a couple I haven't seen before.

My biggest unknown about this rear is the breather being on the hump rather than the tube. If it is a 70-74 E-Body (flange to Flange says it is) then shouldn't the breather be on the tube (as I understand 70 and up its on the tube)

The two axles being different length my guess is someone replaced one at some point or there was variability in the axle length.

 

[Dana67Dart]

Took some photos.

56 1/2 flange to flange (Assuming Moparts' dimensions are correct it can't be any thing but 70-74 E-Body)
46 CL perch to CL perch (yes the photo is left side to left side but that's the same as Cl to CL, 65-73 B-Body or 70-74 E-Body)
Breather on the hump pre 70

Any thoughts on the "2" stamped next to the perch?