CRG Discussion Forum

Camaro Research Group Discussion => General Discussion => Topic started by: Torsionbar on April 13, 2023, 01:11:17 PM

Title: Original stamp or re stamp
Post by: Torsionbar on April 13, 2023, 01:11:17 PM: Hello

I'm looking at a block to replace a CE block I have that spit the wrist pin out and destroyed a bore.

Found this block and I'm curious if some experts can give me their opinion on the DZ stamp. To me it looks legit and you can see the partial vin next to it but the deck surface looks pretty rough.

Thanks for any input
Title: Re: Original stamp or re stamp
Post by: bertfam on April 13, 2023, 01:12:57 PM: I don't see a DZ stamp. Just a picture of the casting date "L 12 8" (December 12th, 1968)

Ed
Title: Re: Original stamp or re stamp
Post by: Torsionbar on April 13, 2023, 01:57:53 PM: Oops

I tried to upload 3 pictures.

I'll see if I can upload the correct picture.

Thanks for pointing that out.
Title: Re: Original stamp or re stamp
Post by: bertfam on April 13, 2023, 02:07:10 PM: Looks good to me. Can you make out the partial VIN next to the suffix? Looks like 9N56?????

Ed
Title: Re: Original stamp or re stamp
Post by: Torsionbar on April 13, 2023, 02:09:35 PM: I will be going to have a look at it soon.
Unfortunately that's the only pictures I got from the seller.
Title: Re: Original stamp or re stamp
Post by: David K on April 13, 2023, 02:37:21 PM: Ed, I'm curious how the DZ can be so easily seen but not the partial.
Title: Re: Original stamp or re stamp
Post by: cook_dw on April 13, 2023, 02:46:52 PM: Assembly date stamped at engine assembly plant; vin at car plant. 2 different people stamping and one was heavier handed vs the other. Plus it appears the vin was attempted to have been removed at some point.
Title: Re: Original stamp or re stamp
Post by: David K on April 13, 2023, 04:18:23 PM: Call me pessimistic, but i see what appears to be a 2nd set of numbers.....or is it my imagination? I've had Lasik so I see OK.
Title: Re: Original stamp or re stamp
Post by: boomer632 on April 13, 2023, 04:52:32 PM: I always thought that having broach marks on the pad that run perpendicular to the cylinder bores was one of a few good indicators of a legit stamp. It looks to me like someone ran a flat disk on pad or had block decked then re stamped numbers. Broach lines should be straight, not circular. Thats just my observation tho.
Title: Re: Original stamp or re stamp
Post by: KurtS on April 13, 2023, 05:54:45 PM: It's an original engine stamp.
Title: Re: Original stamp or re stamp
Post by: bertfam on April 13, 2023, 06:11:51 PM: Quote
I always thought that having broach marks on the pad that run perpendicular to the cylinder bores was one of a few good indicators of a legit stamp.

Usually. Broach marks are now being faked and with most you can tell, but there are some really good ones out there that are much harder to detect so don't use "just" the broach marks to determine a factory pad.

Ed
Title: Re: Original stamp or re stamp
Post by: Sauron327 on April 13, 2023, 07:44:25 PM: I know for a fact some of heavy hitters selling parts have been restamping for decades and stealing. Some guys think they have legit Chevys but they are not.
Title: Re: Original stamp or re stamp
Post by: KurtS on April 13, 2023, 08:01:49 PM: That pad has been mistreated - gotta see through that...
Title: Re: Original stamp or re stamp
Post by: David K on April 13, 2023, 09:18:20 PM: The 2nd set I'm referring to is the area where the VIN is.
Title: Re: Original stamp or re stamp
Post by: David K on April 14, 2023, 12:49:01 AM: Marked where I see numbers…..
Title: Re: Original stamp or re stamp
Post by: bertfam on April 14, 2023, 12:52:58 AM: Quote
Marked where I see numbers…..

That's the partial VIN. Looks like 19N56 something

Ed
Title: Re: Original stamp or re stamp
Post by: camaronut on April 14, 2023, 10:35:55 AM: Quote from: Sauron327 on April 13, 2023, 07:44:25 PM
I know for a fact some of heavy hitters selling parts have been restamping for decades and stealing. Some guys think they have legit Chevys but they are not.

Yep. Total shame what this hobby has been brought down to.
Title: Re: Original stamp or re stamp
Post by: KurtS on April 14, 2023, 04:16:49 PM: Looks like the VIN was double stamped. Really hard to see much in the VIN area with that picture.