Author Topic: What do you think of this stamp?  (Read 8345 times)

68 Ragtop

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What do you think of this stamp?
« on: August 02, 2018, 02:15:25 AM »


124678N336772

Ok, this is a bit of a trick question. I know the stamp is a fake. I am just curious if it was done so bad on purpose to prove a point, or if they think it looks genuine. It is on an insurance company display vehicle

bcmiller

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Re: What do you think of this stamp?
« Reply #1 on: August 02, 2018, 03:15:06 AM »
What block is it, the later “short pad” block? Have a wider view pic?

Bryon / 1968 Camaro SS 396 coupe - now old school 468 big block
1967 Camaro RS/SS 396 coupe L35/M40 - 4 generation family project
Looking for 68 Camaro with body # NOR 181016

KurtS

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Re: What do you think of this stamp?
« Reply #2 on: August 02, 2018, 03:28:01 AM »
Yup, it's a later block that someone restamped.
Kurt S
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bcmiller

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Re: What do you think of this stamp?
« Reply #3 on: August 02, 2018, 03:54:03 AM »
In my opinion, just looking at the only the stampings, they are fairly convincing.

Always use as much information as you can when evaluating a block and have the pad cleaned off - no paint or corrosion. Look at the font and spacing. Also look for broach marks, the block casting number and block casting date if possible. Deck height and the complete block to head mounting surface may need to be scrutinized (head off the block) in some cases. 
Bryon / 1968 Camaro SS 396 coupe - now old school 468 big block
1967 Camaro RS/SS 396 coupe L35/M40 - 4 generation family project
Looking for 68 Camaro with body # NOR 181016

dannystarr

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Re: What do you think of this stamp?
« Reply #4 on: August 02, 2018, 04:24:31 AM »
This really is convincing. What helps it is the tops of all the numbers and letters are a little light in stamping. Just like some originals I have seen. Broaching doesn't seem to be there as there are small horizontal lines. Looks pretty darn real... Danny

firstgenaddict

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Re: What do you think of this stamp?
« Reply #5 on: August 02, 2018, 08:16:43 AM »
IF compared to other stamps of the same suffix from the same day would it exhibit similar characteristics?
This is the key...
ALSO there is THIS...
Broaches are machine tools and as such wear at a pretty standard rate, this will give each broached block a distinct scraping pattern on it's surface and over the course of a given period one could determine if the broach marks exhibited the proper patterns of wear.
James
Collectin' Camaro's since "Only Rednecks drove them"
Current caretaker of 1971 LT1's - 11130 and 21783 Check out the Black 69 RS/Z28 45k mile Survivor and the Lemans Blue 69 Z 10D frame off...
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bcmiller

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Re: What do you think of this stamp?
« Reply #6 on: August 02, 2018, 08:30:07 AM »
IF compared to other stamps of the same suffix from the same day would it exhibit similar characteristics?
This is the key...

To a certain extent, yes. Same day/same suffix stamps are usually very similar, but that would not have to always be true, especially on high volume engines. Never say never.
Bryon / 1968 Camaro SS 396 coupe - now old school 468 big block
1967 Camaro RS/SS 396 coupe L35/M40 - 4 generation family project
Looking for 68 Camaro with body # NOR 181016

firstgenaddict

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Re: What do you think of this stamp?
« Reply #7 on: August 02, 2018, 08:38:18 AM »
Never say never except to say:
NEVER speak in ABSOLUTES.  ;D
James
Collectin' Camaro's since "Only Rednecks drove them"
Current caretaker of 1971 LT1's - 11130 and 21783 Check out the Black 69 RS/Z28 45k mile Survivor and the Lemans Blue 69 Z 10D frame off...
https://plus.google.com/photos/112392262205377424364/albums?banner=pwa

68 Ragtop

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Re: What do you think of this stamp?
« Reply #8 on: August 02, 2018, 12:00:13 PM »
I am pretty sure they did a poor job on purpose. This is the Farmers insurance car that is half stock and half modified and they use it at major car shows as a display. maybe some of you have seen it.

I have seen it in person, but never realized they used the modified side to show poor workmanship vs the stock side to show correct. The left side is the original side, and the right side is the modified side. Since the pad stamp is on the right side, they must be showing fake stamps. They also show the gang stamper they used.

Quote
This 1968 Chevrolet Camaro RS convertible was built at the State Farm Vehicle Research Facility as a half-and-half “Jekyll and Hyde” car for training purposes and PR display. The driver’s side of the car is a high-quality restoration to correct factory-stock specs. The passenger side is a customized street machine with lots of flashy aftermarket parts and custom bodywork, but deliberately less-exacting craftsmanship.

In addition to serving as an eye-catching car-show display piece, this car was built by State Farm employees who love their cars, enjoy restoring cars and have fun working on cars both personally and professionally. This 1968 Camaro is being used to educate State Farm field agents on the special challenges of assigning proper values to collector cars and owner-modified vehicles. This knowledge enables the agents to accurately assess value and correctly underwrite such special-case vehicles.

There is also another mistake on the car that I think they did NOT do on purpose. The RS side of the car is missing the proper moldings, but the modified side has it.

https://www.flickr.com/photos/statefarm/sets/72157629103097163


Kelley W King

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Re: What do you think of this stamp?
« Reply #9 on: August 02, 2018, 12:16:53 PM »
To me the broach marks do not look right. Too clean, like the cutter was brand new. But if you had not told me I would be fooled.
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68 Ragtop

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Re: What do you think of this stamp?
« Reply #10 on: August 02, 2018, 12:32:49 PM »
Bad broach marks, wrong size pad, and stamps not next to each other horizontal. Other than that, they could have made a pretty convincing re-stamp. The knowledge and tools are out there.

69Z28-RS

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Re: What do you think of this stamp?
« Reply #11 on: August 02, 2018, 01:02:33 PM »
factory broach marks DO NOT run horizontally; they are always front to rear (or rear to front your choice).. :)
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BillOhio

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Re: What do you think of this stamp?
« Reply #12 on: August 02, 2018, 02:39:09 PM »
Gary is right, modern milling machings dont run like the GM ones did. They ran from one end of the block to the other, the ones that I have seen at engine shops run in a circle and would make lines running from the manifold to the oil pan like these
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bcmiller

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Re: What do you think of this stamp?
« Reply #13 on: August 02, 2018, 08:12:14 PM »
Guys,

Yes the broach marks on the block are wrong. Nobody is arguing that.

The STAMP is fairly convincing. 

Now - back to your regular programming.
Bryon / 1968 Camaro SS 396 coupe - now old school 468 big block
1967 Camaro RS/SS 396 coupe L35/M40 - 4 generation family project
Looking for 68 Camaro with body # NOR 181016

68 Ragtop

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Re: What do you think of this stamp?
« Reply #14 on: August 02, 2018, 08:57:13 PM »
Quote
The STAMP is fairly convincing.

Yes it is. I am just surprised that an insurance company has a block stamp kit. This picture is described as "Rented factory engine block stamp kit" Why do they know where to rent a block stamp kit and what else do they use it for? Anyone surprised you can rent these?