CRG Discussion Forum

Camaro Research Group Discussion => Decoding/Numbers => Topic started by: uscrichter on March 28, 2022, 10:03:04 PM

Title: Factory Axle Stamp?
Post by: uscrichter on March 28, 2022, 10:03:04 PM

I was bead blasting my 12 bolt 4:10 rear end I had bought a few years ago and noticed grinding marks once the old paint was blasted off, it's not original to my car however I will be using it and just wondering if the factory did that?, are they original stampings?, also you can see the "E" stamped twice.

Title: Re: Factory Axle Stamp?
Post by: mls68z28 on April 03, 2022, 09:16:33 PM

Rear axle stamp,,8N420159,04D.

Title: Re: Factory Axle Stamp?
Post by: cook_dw on April 04, 2022, 02:19:45 AM

Stamp looks legit to me.

Title: Re: Factory Axle Stamp?
Post by: cook_dw on April 04, 2022, 11:44:44 AM

uscrichter can you post a photo of your stamp.?

Title: Re: Factory Axle Stamp?
Post by: Pacecar on April 04, 2022, 05:19:41 PM

If it was a late build rear axle, then it might have been stamped originally CBV and the factory would have ground off the C

Title: Re: Factory Axle Stamp?
Post by: cook_dw on April 05, 2022, 01:12:58 AM

Haven’t seen a ground off C.  More like a peened C.

Title: Re: Factory Axle Stamp?
Post by: uscrichter on April 06, 2022, 08:13:59 PM

Here is the stamp in question

Title: Re: Factory Axle Stamp?
Post by: R68GTO on April 07, 2022, 01:11:06 AM

Same date as my BE rear.  That grinding looks like someone tried to clean off rust to read the stamp vs anything the factory might have done.  If the factory did it, it would be very intentional to eliminate worn numbers IMO

Title: Re: Factory Axle Stamp?
Post by: cook_dw on April 07, 2022, 02:04:04 AM

Casting date?   Stamp appears legit.

Title: Re: Factory Axle Stamp?
Post by: KurtS on April 07, 2022, 05:24:32 AM

Rotated.

Title: Re: Factory Axle Stamp?
Post by: uscrichter on April 07, 2022, 08:55:18 PM

Here's is the date code. E 25 8