I need help with a rear end, I am REALLY confused.

casting # 3894860 (12-bolt)
axle date PD1122G
E
casting K168

How do I figure year built? Chevy by numbers didn't help much. I bought from a guy who didn't have it long. I was told it came out of a '67 RS/SS

CSG says K168 means Nov 16 '68 -> so this came out of a '69 Camaro?? How do I tell the difference between a '69 & a '67 rear end (any visual signs?), and PD in '69 (according to CBTN) means a 2.73 gear ratio (not in a 12 bolt would they?). PD in a '67 would mean a 3.07 posi (which makes more sense for an SS)

or is the K a Plant code for McKinnon and 168 mean cast on the 168th day of the year. If so I figure 168 days is roughly August, does this make sense to have an August cast and a November build?

How the heck do I figure the codes for a rear end???

PS. All the numbers are easy to read - so I'm not misreading.

Thanks for the help

Matt

Find the casting date on the rear which is located on the rear webbing of the center pumpkin. Then you'll know the year of manufacture and the rest should fall into place.

PD meant something different each year. The date code is the key to this rearend. I'll add that it is on the upper right corner. See the sketch at http://www.camaros.org/numbers.shtml#RearAxleNumbers .

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Kurt S.
www.camaros.org (http://www.camaros.org)

The K168 is in the position outlined on the drawing from CRG site for casting date.

This is what confuses me, the way I understand the CRG stuff this would translate as K(Nov)16(16th)8(1968) - doesn't make sense - doesn't look like a put together axle (ie: misc pieces welded together) Numbers look sharp and easily read. I'll try to post a picture after work.

Matt

If its a 12 bolt and has the perches for mono leaf's then its a 67. Don't believe any 68 or 69's came with 12 bolt rears and mono leaf's, but all 67's are mono's regardless

Alright, so I'm an idiot!

When I took pictures, shadows were different. Son of a gun, the pictures look like K166 NOT K168.

Suddenly this thing makes sense.

I appreciate your help guys.

Matt