Help decoding 71 rear end numbers
Thread Starter
Drifting
Joined: Oct 2007
Posts: 1,254
Likes: 5
From: Brown Summit North Carolina
Help decoding 71 rear end numbers
Can anyone assit with decoding the following rear end code?
1 AB 8870 W
I have read in the restoration guide and have looked at a sample code for a 71 car
The 1 in front is not something I have read that should be there.
On a 70 car it indicates the shift that built the unit, but not sure that info was there for 71
On a 71 the AB is 3:70 and 70 cars used 3 letters
So it should be a 71 unit.
The 8 8 7 0 , I think this may may be 8 for August / 8 for the day of month or August 8th
and then 70 for year and W for assembly plant or possibly maker of the gear set.
Thanks David
1 AB 8870 W
I have read in the restoration guide and have looked at a sample code for a 71 car
The 1 in front is not something I have read that should be there.
On a 70 car it indicates the shift that built the unit, but not sure that info was there for 71
On a 71 the AB is 3:70 and 70 cars used 3 letters
So it should be a 71 unit.
The 8 8 7 0 , I think this may may be 8 for August / 8 for the day of month or August 8th
and then 70 for year and W for assembly plant or possibly maker of the gear set.
Thanks David
Melting Slicks
Joined: Nov 2004
Posts: 2,672
Likes: 6
From: Nevada City California
Your stamping is a little off from what I see mostly, however you might have a early built '71 (low VIN). Here is what I usually see on '71's, both are from my cars.
1 AB W 067 E 1 or 1 AW W 061 E 1
The W is for the gear & axel plant in Warren, MI. The 1 at the end is for the day shift vs 2 which is for night shift. The 067 or 061 is a Julian date, it stands for the sixty-seventh or sixty-first day of calendar year 1971.
1 AB W 067 E 1 or 1 AW W 061 E 1
The W is for the gear & axel plant in Warren, MI. The 1 at the end is for the day shift vs 2 which is for night shift. The 067 or 061 is a Julian date, it stands for the sixty-seventh or sixty-first day of calendar year 1971.
Last edited by early shark; Nov 30, 2009 at 06:46 PM.
Thread Starter
Drifting
Joined: Oct 2007
Posts: 1,254
Likes: 5
From: Brown Summit North Carolina
Your stamping is a little off from what I see mostly, however you might have a early built '71 (low VIN). Here is what I usually see on '71's, both are from my cars.
1 AB W 067 E 1 or 1 AW W 061 E 1
The W is for the gear & axel plant in Warren, MI. The 1 at the end is for the day shift vs 2 which is for night shift. The 067 or 061 is a Julian date, it stands for the sixty-seventh or sixty-first day of calendar year 1971.
1 AB W 067 E 1 or 1 AW W 061 E 1
The W is for the gear & axel plant in Warren, MI. The 1 at the end is for the day shift vs 2 which is for night shift. The 067 or 061 is a Julian date, it stands for the sixty-seventh or sixty-first day of calendar year 1971.
Is the 1st # 1 the year model indicator?
Not sure why the rest of the numbers are not in line with the norm.
Thanks
David
