Correct me if I'm wrong re: differential ID... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

68gmsee · 08-27-2007, 12:47 PM

I was looking at my 69 Chevy yesterday and decided to check the rear end ID numbers just for the heck of it.

I swapped it many years ago and it I think it came off a 1970 truck.

It's a 12 bolt differential with these numbers:TDE 12 22 W2

TDE--3.07
12----month of Dec.
22----Day of the month
W----Warner, Michigan
2-----this I'm not sure of. One site I found said it was the 2nd work shift??

**uncle** · 08-27-2007, 03:38 PM

It's a 307 unless someone changed the carrier and gear during a 37 year span. It's also at least a 70,because it has a 3 letter code. Housing should measure 57" from backing plate to backing plate.

68gmsee · 08-27-2007, 05:07 PM

Thnx, Uncle. I figured the data was correct but some sites differ in the information you get so I wasn't sure. I am fairly certain the gears have never been changed out.

I guess I'm satisfied with that ratio. It's got a worn down 350 with a 350 turbo hydramatic that I took off a 77 Impala and I want to put a crate engine in it. I intend to use it as a daily work truck for lite hauling when I put it back together.

08-27-2007, 12:47 PM	#1
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Correct me if I'm wrong re: differential ID... I was looking at my 69 Chevy yesterday and decided to check the rear end ID numbers just for the heck of it. I swapped it many years ago and it I think it came off a 1970 truck. It's a 12 bolt differential with these numbers:TDE 12 22 W2 TDE--3.07 12----month of Dec. 22----Day of the month W----Warner, Michigan 2-----this I'm not sure of. One site I found said it was the 2nd work shift?? Last edited by 68gmsee; 08-27-2007 at 12:51 PM. Reason: Typo should be TDE

08-27-2007, 03:38 PM	#2
uncle Senior Member Join Date: Aug 2003 Location: Conyers,Ga. Posts: 7,288	Re: Correct me if I'm wrong re: differential ID... It's a 307 unless someone changed the carrier and gear during a 37 year span. It's also at least a 70,because it has a 3 letter code. Housing should measure 57" from backing plate to backing plate.

08-27-2007, 05:07 PM	#3
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Correct me if I'm wrong re: differential ID... Thnx, Uncle. I figured the data was correct but some sites differ in the information you get so I wasn't sure. I am fairly certain the gears have never been changed out. I guess I'm satisfied with that ratio. It's got a worn down 350 with a 350 turbo hydramatic that I took off a 77 Impala and I want to put a crate engine in it. I intend to use it as a daily work truck for lite hauling when I put it back together.



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