Rear-End Identification help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Tx70Gmc · 01-14-2022, 01:17 PM

Can anyone help identify my rear-end?

I posted a reply in a very old thread, but did not have any luck getting responses, so I figured I would try to post a new thread.

I have searched the forums and came across a post that referred to some identifying factors, but I'm not sure what it all means.

here is the post:
http://67-72chevytrucks.com/vboard/s...79#post9018479

Can you help me identify mine?

67890 - GM 12 bolt
E120 - May 12, 1970
NF3896838

Axle Stamp = TDA 0521W1

so I think the TDA means its a 3.73 gear and I think the 052 is the 52 day of the year it was built? and I have no clue what the 1W1 means?

any ideas?

Thanks,

01-14-2022, 01:17 PM	#1
Tx70Gmc Registered User Join Date: Dec 2016 Location: Dallas, Tx Posts: 60	Rear-End Identification help Can anyone help identify my rear-end? I posted a reply in a very old thread, but did not have any luck getting responses, so I figured I would try to post a new thread. I have searched the forums and came across a post that referred to some identifying factors, but I'm not sure what it all means. here is the post: http://67-72chevytrucks.com/vboard/s...79#post9018479 Can you help me identify mine? 67890 - GM 12 bolt E120 - May 12, 1970 NF3896838 Axle Stamp = TDA 0521W1 so I think the TDA means its a 3.73 gear and I think the 052 is the 52 day of the year it was built? and I have no clue what the 1W1 means? any ideas? Thanks, Last edited by Tx70Gmc; 01-14-2022 at 03:12 PM.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.