Re-Tag?

[Joe L.]

Re: Re-Tag?

Remember, mine is an early 67 model car with a motor produced September 29. If as Joe says, "the first alpha character of the gang stamp was not even changed regularly. It remained in the gang stamps until it needed to be replaced due to wear", it is entirely possible that the stamp did in fact come with my original engine.

This is the reason I want to really clean the stamp pad and look for the broach marks. If it is a restamp, someone went to an awful lot of trouble in getting a correct motor with a correct build date period to then stamp what was essentially a not extremly valuable motor. Were it a 427, then yes, the effort would be worth it.. When I bought my car in 2004, there were a LOT of similar cars around for sale as well as quite a few 427's.

I have the owners back to the mid 80's, all private parties. At that point it would have been an expensive undertaking with little profit return evident. Doing it today, yes, there would probably be a payoff.

For that reason, I want to look further.

Who is Al Grenning and how can I contact him?

Again, thanks to ALL who responded. Every opinion helps.

Joe-----

Al Grenning is an NCRS member and has a Corvette consulting service. You should be able to e-mail him by finding him on the members list of this discussion board.

[Mark F.]

Re: Re-Tag?

Joe-----Al Grenning is an NCRS member and has a Corvette consulting service. You should be able to e-mail him by finding him on the members list of this discussion board.

Joe M. this is Al's website, which also has his contact info...

http://www.ccas4vettes.com/

[Ronald L.]

Re: Re-Tag?

Looking at the data:

VIN 03123 has a Estimated build date of Nov 5, 1966

Did you get the NCRS shipping data?

The Engine Stamp is 1013

Plausable

What is not easy to digest is the F engine stamp nearly two months after 66 End of Engine Production.

My guess is if you pull that head - there is going to be a suprise.

[Patrick B.]

[Ronald L.]

Re: Re-Tag?

Pat
I agree.

Without spending an hour on it, I sized the pics to the engine font size +/- .02 or possible .04 difference between the two, and it did seem as you noted the VIN was small.

Given that base the VIN font difference was .6-.8 more that 2x magnitude.

The others that I wasn't sure about were 0 and O, given we are talking the same Engine Asy Plant and the same model year.

[Leif A.]

Re: Re-Tag?

Are my eyes playing tricks with me or am I seeing parts of another VIN interspersed with the OP original pic, post #1. I see a "7" between the "3" and "1" of the VIN and possibly another number between the "0" and "3". Not a double stamp like my VIN (post #6) but a completely different set of numbers. Who can magnify this more clearly...Jack Morocco are you watching??

[Patrick B.]

Re: Re-Tag?

Ronald--- There were probably at least 4 different styles of zeros in the bin of pieces of type at Flint. It is hard to make any conclusions about the zeros. It is actually a little unusual that both zeros on the good block were the same style, when random picking would favor different zeros.

[Mark F.]

Re: Re-Tag?

Post number 9 in the string link below the image has this 'mirrored' sample of some stamp pad characters...courtesy of the "Maestro", Jack Morocco - who credits John Hinckley for providing the original...

You can see the different fonts (or styles) in some characters...
look at the "8s" at the lower right
look at the "0s" at the lower left

Vin-Stamps---Gang-Holder-Dies-(Mirrored).jpg

https://www.forums.ncrs.org/showthread.php?124065-1971-LT1-stamp-pad-character-differences&highlight=Gang-Holder

[Gary H.]

Re: Re-Tag?

Here's my sad rebuild story and decking results. On the always wise advice of Leif and Tim... I'm not going to restamp.
stamps.jpg

[Joe L.]

Re: Re-Tag?

Here's my sad rebuild story and decking results. On the always wise advice of Leif and Tim... I'm not going to restamp.
[ATTACH=CONFIG]108317[/ATTACH]

Gary------

The unfortunate part of it is that the vast majority of blocks do not require deck machining. Usually, when it's done it's done as a routine practice by a machine shop. For the vast majority of blocks they machine, it's of absolutely no consequence. For a few, it's of great consequence.

Cylinder heads usually do require surface machining but it's of little consequence if it's done routinely.

[Gary H.]

Re: Re-Tag?

Gary------

The unfortunate part of it is that the vast majority of blocks do not require deck machining. Usually, when it's done it's done as a routine practice by a machine shop. For the vast majority of blocks they machine, it's of absolutely no consequence. For a few, it's of great consequence.

Cylinder heads usually do require surface machining but it's of little consequence if it's done routinely.

Using Engine Rebuilders of Dallas was not my best decision. There were a lot of minor things that I had to set right beyond the major stamp damage. All in all, after 1000+ miles of driving the engine does perform very well and shows no signs of "internal problems"; compression, plug wear, taps, knocks, etc. In my defense, I told the shop manager several times 'do not damage the engine stamp', literally the day before the block was machined. This is my first C2 restoration. Expensive learning curve so far.

[Ronald L.]

Re: Re-Tag?

Back in '79 I had an early 66 427 block that was very crooked, side to side and front to rear good thing I had the before pics too