Numbers Stamp Questions HELP ????
Thread Starter
Le Mans Master
Joined: Nov 2001
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From: LONG ISLAND
2025 C3 ('68-'73) of the Year Finalist - Unmodified
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Numbers Stamp PAD Questions PICS HELP ????
See enclosed 2 photos of my 1968 427/400 4spd block numbers pad stamp, built April 1, 1968 it appears there are shadow numbers ( duplicate set ) when looking with bright light & magnified, any imput ? thoughts ? seems strange, anyone see this before ? RESTAMP ? as you back off view pic # 2 you don't notice it as much ? i never noticed it before, wasnt untill photographed that it showed up, RIGHT NOW !!!! some are also heavier & others mor faint.......any insight , thoughts ? imput please............i'm NERVOUS ....
OH BOY.............NO BAD NEWS PLEASE ............!!!
ZIXXX PACKER
OH BOY.............NO BAD NEWS PLEASE ............!!!
ZIXXX PACKER
Last edited by 427SIXPACK; Oct 1, 2006 at 06:01 PM.
Le Mans Master
Joined: Jun 2005
Posts: 5,447
Likes: 3
From: Syracuse NY
Before the picutres loaded I was thinking a little bounce and double strike when the original staming took place.
After seeing the straight grain on the pad it looks like the block was decked and restamped.
I'm going to be watching this thread
Hope it turns out to be nothing to worry about. Either way you've got a beautiful car.
Rick
After seeing the straight grain on the pad it looks like the block was decked and restamped.
I'm going to be watching this thread
Hope it turns out to be nothing to worry about. Either way you've got a beautiful car.
Rick
Burning Brakes
Joined: May 2006
Posts: 763
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From: FBO Florida
From looking at it it looks as if there was some bounce because the light set of numbers are all out of phase together with the full stamp. Now the question is weather this is an normal anomaly or something else. Your photos are very good and allow for analysis of the field (block) for broach marks. I would post on the NCRS board for an analysis there. In previous discussions I have seen postings by St Louis plant employees on the subject of engine stampings.
Good Luck
Good Luck
Le Mans Master
Joined: Mar 2004
Posts: 7,502
Likes: 1,509
From: Little Rock AR
Looks original to me. My original steering box on another car has a double hit date code. Much more visible than this one. Nothing to be concerned with here. The stamping procedure was not rocket science. The guy with the 5 lb sledge set the stamp holder on the masking tape and whacked it. I bet there are plenty of double hits more visible than that one out there. The hammer bounced and that is what it looks like to me. Just visualuize what the guy did all day and you will see how this could happen.
-Mark.
-Mark.
Thread Starter
Le Mans Master
Joined: Nov 2001
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From: LONG ISLAND
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Decked / Restamped ????
It appears to me that the lighter duplicated letters / numbers in the backround are identical in size & style to those that are darker / more prominent. Would'nt it be impossible to match that exactly ? and.......if you look at the spot thats most important to verify a big block engine, "IM"
is L68 4spd, it matches as you can see a faint "I" in the same area .......HENSE NOT TRYING TO MAKE IT INTO SOMETHING IT'S NOT.....THE VIN PORTION MATCHES MY CAR, & I HAVE THE TANK STICKER WHICH MATCHES EVERYTHING AS WELL, & EVERYTHING ELSE I SEE ON THE CAR IS CORRECT & DATES ALL SEEM TO BE CORRECT INCLUDING ORIGINAL REDLINE SPARE & DATED JACK, WHERE ARE ALL THE EXPERTS.............?
Thanks
ZIXXX PACKER
is L68 4spd, it matches as you can see a faint "I" in the same area .......HENSE NOT TRYING TO MAKE IT INTO SOMETHING IT'S NOT.....THE VIN PORTION MATCHES MY CAR, & I HAVE THE TANK STICKER WHICH MATCHES EVERYTHING AS WELL, & EVERYTHING ELSE I SEE ON THE CAR IS CORRECT & DATES ALL SEEM TO BE CORRECT INCLUDING ORIGINAL REDLINE SPARE & DATED JACK, WHERE ARE ALL THE EXPERTS.............?
Thanks
ZIXXX PACKER
Last edited by 427SIXPACK; Oct 1, 2006 at 04:56 PM.
Thread Starter
Le Mans Master
Joined: Nov 2001
Posts: 8,805
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From: LONG ISLAND
2025 C3 ('68-'73) of the Year Finalist - Unmodified
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Thanks can you assist me in posting ? do you need to be a meber / sign up ? what is the site ? www.ncrs.com ?
ZIXXX PACKER
ZIXXX PACKER
Melting Slicks
Joined: Apr 1999
Posts: 2,675
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From: Sudbury MA
The site is www.ncrs.org and you should post to the Technical Discussion Board there.
You do not need to be a member.
Kurt NCRS # 26406
You do not need to be a member.
Kurt NCRS # 26406
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Thread Starter
Le Mans Master
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From: LONG ISLAND
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Whew................
WHEW................thanks 
Thread Starter
Le Mans Master
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From: LONG ISLAND
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Where are all the experts ?
Where are all the experts ? thought i'd get a million replies, since everyone is ALWAYS talking about "MATCHING #'S ?
help...............!!!
thanks
zixxx packer
help...............!!!
thanks
zixxx packer
Melting Slicks
Joined: Feb 2001
Posts: 3,330
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From: Europe , Luxembourg
Hi
The way I understand this is that those pad broach marks are correct GM style, longitudinal straight marks.
A decked block normally has curved marks.
How did they stamp ? One stamp at a time or was there some kind of a stamp set holder .
I would think it was one stamp at a time and this would make this susspicious again as the double stamping is equal to all the numbers/letters. If it bounced, this guy must have had a system.
Keep us informed as this is very interesting.
Good luck. Günther
The way I understand this is that those pad broach marks are correct GM style, longitudinal straight marks.
A decked block normally has curved marks.
How did they stamp ? One stamp at a time or was there some kind of a stamp set holder .
I would think it was one stamp at a time and this would make this susspicious again as the double stamping is equal to all the numbers/letters. If it bounced, this guy must have had a system.
Keep us informed as this is very interesting.
Good luck. Günther
Thread Starter
Le Mans Master
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From: LONG ISLAND
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not one at a time.....
ALMOST POSITIVE THEY WERE PUT IN A BLOCK & DONE AS A "SET" OF NUMBERS ALL AT ONCE, CAN ANYONE CONFIRM . tHATS WHAY THEY ARE ALL STRAIGHT ON THE SAME PLANE......
zixxx packer
zixxx packer
Safety Car
Joined: Sep 1999
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From: AnyTown NJ
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Originally Posted by 427SIXPACK
ALMOST POSITIVE THEY WERE PUT IN A BLOCK & DONE AS A "SET" OF NUMBERS ALL AT ONCE, CAN ANYONE CONFIRM . tHATS WHAY THEY ARE ALL STRAIGHT ON THE SAME PLANE......
zixxx packer
zixxx packer
Team Owner
Joined: Jun 2000
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From: Southbound
Cruise-In II Veteran
Originally Posted by WESCH
...How did they stamp ? One stamp at a time or was there some kind of a stamp set holder...
Thanks to John Hinckley for explaining the process in Corvette Enthusiast Magazine. John's articles are worth the price of a subscription.
Drifting
Joined: Sep 2006
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From: MS
I agree with the double stamp but there is one problem.
The Engine stamp was applied at Tonawanda after the engine was assembled.
The VIN stamp was applied at St Louis right before the engine was installed in the vehicle.
What are the chances of a double strike on two different stampings?
The Engine stamp was applied at Tonawanda after the engine was assembled.
The VIN stamp was applied at St Louis right before the engine was installed in the vehicle.
What are the chances of a double strike on two different stampings?
Thread Starter
Le Mans Master
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From: LONG ISLAND
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A New Twist ???
A New Twist ???
Is This A Fact ? More Doors & Hoods Keep Opening.........!!
zixxx Packer
Is This A Fact ? More Doors & Hoods Keep Opening.........!!
zixxx Packer
Thread Starter
Le Mans Master
Joined: Nov 2001
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From: LONG ISLAND
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Thanks:
so many conflicting theories.........
thanks,
thanks,
Safety Car
Joined: Sep 1999
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From: AnyTown NJ
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Originally Posted by JohnZ
Looks to me like a good pad and a typical "bounce" stamp; have a cold one and relax.