12 bolt decode KDC code?
 

I just picked up a 12 bolt rear. It is a factory 4 link setup. I haven't measured it so I don't know if it is A body or passenger yet. The code is KDC and it is a 1970 casting. Can anyone tell me what this decodes as? I don't see it in any of Colvin's books which leads me to believe it is Olds or Pontiac. Any help is greatly appreciated.


Jason

Re: 12 bolt decode KDC code?
 

The only thing I could find is that it *might* be a 1971 application for Chevelle/ElCamino.

Does it have the Chevy-style finned rear cover?

Are the axles retained by c-clips or pressed bearings?

Re: 12 bolt decode KDC code?
 

It has the standard Chevy cover. Not sure on the axles as the cover is on as are the drums.


Jason

Re: 12 bolt decode KDC code?
 

It's CKD suffix 2:73 open rearend for a 1970 Chevelle-Elco-Monte.
Starting in 1970,Chevrolet started the three code suffix and some of these were stamped with the "C" on the end,from my findings.

Re: 12 bolt decode KDC code?
 

Rick,
Do you find that the 'C' stamping, whether it's a prefix or a suffix, is stamped separately from the other two letters? It appears that the old two position gang holder was used and the 'C' was stamped separately on the rears that I have seen.

Re: 12 bolt decode KDC code?
 

That's what I have seen too.
There were 3 different plants assembling this rear,Detroit,Buffalo and Warren.
I have seen them stamped C KK as in my cars example,as well as KK C.
I would imagine being a new format,most were unsure of the position.

Re: 12 bolt decode KDC code?
 

Agreed.

Re: 12 bolt decode KDC code?
 

So it is a C KD Rear, but is actually stamped K DC. Is this correct?


Thanks,


Jason

Re: 12 bolt decode KDC code?
 

That's what I think.
Can you show us pix of the axle stamping?

Re: 12 bolt decode KDC code?
 

Can do, once the rain stops https://www.yenko.net/ubbthreads/imag...lins/frown.gif

Thanks everyone,


Jason

Re: 12 bolt decode KDC code?
 

Here is a picture.


Jason https://www.yenko.net/ubbthreads/imag...lins/beers.gif

Re: 12 bolt decode KDC code?
 

That is a 1971 Model Production year code.
Application is the same as 70,but their dates were formated differently then previous years.(I had a feeling you might have this)
KD=2:73 Non Posi for Chevelle-Elco-Monte
C=Plant,Buffalo
204=Day of year assembled-Thursday,July 23rd,1970.
A=Buffalo used this on their early built units,stands for 1st shift.

Re: 12 bolt decode KDC code?
 

Nice. Thanks or the detailed info. At least it isn't Impala!


Jason

Re: 12 bolt decode KDC code?
 

Sure..Thank You for sharing it here. https://www.yenko.net/ubbthreads/imag...lins/beers.gif