If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You must be an NCRS member
before you can post: click the Join NCRS link above to join. To start viewing messages,
select the forum that you want to visit from the selection below.
This is the code I found on my rear end. (My '66 rear end) It does not seem correct or to be similar to the other 1966 rear end codes I see. Can anyone break down the code and let me know the ratio and date.
The code is: AA W 306 E1
Thanks
The "AA" code was used from '71-'75 for a 3.55 axle, with the julian date coding format you showed (306th day of the year), Eaton Posi, first shift.
You'll find the casting number for the diff housing on the passenger side, above the horizontal "fin" on the housing - 66's used #3876476N, and '67-'75 used #3899143. The casting date code is on the driver's side, partially obscured behind the front of the camber strut bracket; that will tell you what year the diff was cast.
We use cookies to deliver our services, and to analyze site activity. We do not share or sell any personal information about our users. For additional details, refer to our Privacy Policy.
By clicking "I AGREE" below, you agree to our Privacy Policy and our personal data processing and cookie practices as described therein. You also acknowledge that this forum may be hosted outside your country and you consent to the collection, storage, and processing of your data in the country where this forum is hosted.
Tweet
Comment