70 12 bolt rear end codes [Archive] - Chevelle Tech

: 70 12 bolt rear end codes


vr1967
May 18th, 04, 9:36 PM
Picked up a 70 rear today. The date code is I 18 9 with an axle code of Ccw 0930B

I know this is a Sept 29, 69 casting date, and I believe 0930 is Sept 30 assembly date. The Ccw is what is strange to me. The 1st C is a larger font, and slightly cocked from the cw.
Is this common? Or just an oddball? Originally slated for a 69, but used in a 70?

I don't really need it, but I have thought of pulling the 3.31s

Virgil

shooter
May 19th, 04, 3:49 AM
I189=Sept 18th 69 casting date
CCW0930B:
The 70's had a "C" (Chevrolet) prefix. CW is the important code, 3.31 ratio,0930 is Sept 30th assembly date, B is Buffalo axle plant.
Sept 69 is a couple of months into the 70 model year production. A 69 Model would be Sept 68.
FYI here is the 70 axle list
http://www.chevelles.com/years/70/70rearcodes.html

Rene
66_Malibu