1971 Differential ID?
Thread Starter
Drifting
Joined: May 2000
Posts: 1,478
Likes: 38
From: Long Island NY
1971 Differential ID?
I'm in the process of restoring trailing arms. While awaiting their return I got a set of numbers off the rear for identification. As follows.l; AW 083 E 2. I believe it's a 3.08 ratio according to NCR. How to decode other numbers and letter? Any info? Also in pic there is what looks like a vent. Just above universal on top of the rear. White plastic tube with a cap. Purpose?
Drifting
Joined: Jul 2002
Posts: 1,995
Likes: 110
From: Garland Texas
I'm in the process of restoring trailing arms. While awaiting their return I got a set of numbers off the rear for identification. As follows.l; AW 083 E 2. I believe it's a 3.08 ratio according to NCR. How to decode other numbers and letter? Any info? Also in pic there is what looks like a vent. Just above universal on top of the rear. White plastic tube with a cap. Purpose?
083 built 83rd day of the year
E eaton
2 2nd shift
Just in front of the strut rod bracket on the drivers side is the casting date. It will be a letter, then 2 digit number, then a single digit. Example d 22 6 April 22 1976
Mike
Team Owner
Joined: Sep 2006
Posts: 31,270
Likes: 4,362
From: Westminster Maryland
Hi V,
As Mike indicated there's a casting date on the differential case and on the differential cover.
Regards,
Alan
L 23 0 Dec 23 70 for a car built the middle of January 71
A 4 1 Jan 4 71 for the same car.
As Mike indicated there's a casting date on the differential case and on the differential cover.
Regards,
Alan
L 23 0 Dec 23 70 for a car built the middle of January 71
A 4 1 Jan 4 71 for the same car.
Thread Starter
Drifting
Joined: May 2000
Posts: 1,478
Likes: 38
From: Long Island NY
Team Owner
Joined: Sep 2006
Posts: 31,270
Likes: 4,362
From: Westminster Maryland
Hi V,
During the 70-72 period:
There were 3 sources for the posi-traction unit:
E… Eaton
W…Warner Gear
D… Dana
There were 6 Axle Plants
B… Buffalo
D… Dana
E… Eaton
G… Chevrolet Gear & Axle
K… McKinnon Industries
W…Warren Motive.
Regards,
Alan
During the 70-72 period:
There were 3 sources for the posi-traction unit:
E… Eaton
W…Warner Gear
D… Dana
There were 6 Axle Plants
B… Buffalo
D… Dana
E… Eaton
G… Chevrolet Gear & Axle
K… McKinnon Industries
W…Warren Motive.
Regards,
Alan
Last edited by Alan 71; Jan 5, 2017 at 07:43 AM.
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