Re-Tag?

[Joe M.]

I have owned my 67 L79 for 17 years and bought it as an original car with original motor. At the time I was unaware of forums and such that deal with C2-s or any Corvette for that matter.


When I bought it, I was told to look at the numbers on the front of the engine. At the time the engine had a fresh paint job, including the numbers. In my haste to read them, I used a flat screwdriver to scrape the numbers to get the paint off. (Yeah, NOW I know it was very foolish to do that, nonetheless, I did). Anyway, I posted the picture on another forum and was told that it is a restamp because of the font. I have no clue. My engine casting number is 3892657, Date code I296. My vin ends 03123.

Is this a restamp? img_2024_064c389b8eaec91fcd2abac8c96903a428e75afc.jpg

[Jimmy G.]

Re: Re-Tag?

Probably not Too ugly to be a stamper Lack of any broach marks is concerning but it is a small block

[Joe M.]

Re: Re-Tag?

How could I clean it better to see if there are broach marks?

[Owen L.]

Re: Re-Tag?

How could I clean it better to see if there are broach marks?

Perhaps a light rub with 2-aught (00) to 4-aught (0000) steel wool will polish the corrosion enough to see any broach marks. Be aware that unless precautions are taken to protect the marks, they can easily be removed during a block reconditioning.

[Dennis C.]

Re: Re-Tag?

How could I clean it better to see if there are broach marks?

Soak a clean cotton rag in Evaporust, lay in on the stamp pad and cover it with plastic wrap. The rag will need to stay on for a few days and you will need to keep it wet as it dries out.

I would not use any kind of abrasive, no matter how fine it is. Any abrasive will leave scratch marks which will be visible when blown up.

Be sure to concentrate on the upper and lower portions of the stamp pad, including the corners.

Good luck.

[Leif A.]

Re: Re-Tag?

All 1967 small block Corvette engines were manufactured at the Flint plant. The date suffix on a '67 begins with the letter "V". The date stamp in your picture, of your engine, begins with a letter "F" which is not typical/correct for a '67 L79.
A picture of my '67 L79 that had an "all to close" brush with a decking machine.

[Joe L.]

Re: Re-Tag?

All 1967 small block Corvette engines were manufactured at the Flint plant. The date suffix on a '67 begins with the letter "V". The date stamp in your picture, of your engine, begins with a letter "F" which is not typical/correct for a '67 L79.

Leif and Joe------


Yup.

[Thomas N.]

Re: Re-Tag?

I love Evaporust, but please do not use it on cast iron.
You will get etching into the cast surface, if it isn't completely submerged.
I've used it before on cast with disastrous results.

[Jimmy G.]

Re: Re-Tag?

OOPS Never do stuff like this LATE LATE at night

[Dennis C.]

Re: Re-Tag?

I love Evaporust, but please do not use it on cast iron.
You will get etching into the cast surface, if it isn't completely submerged.
I've used it before on cast with disastrous results.

My experience has been very different than yours. I have done this many times without an issue.

[Joe M.]

Re: Re-Tag?

Evaporust also comes in gel form. Perhaps this might be easier to control as well as keep moist longer?>

[Michael V.]

Re: Re-Tag?

Use Naval Jelly. I put it on my pad with a Q-Tip.

[James W.]

Re: Re-Tag?

That's what I use with great success. May take a few reapplications but it works great.

James

Use Naval Jelly.

[Mark F.]

Re: Re-Tag?

FWIW - No matter how well-controlled you believe you are handling gels or liquids like this - and as with use of any acid-contain materials (Naval Jelly can be up to 30% phosphoric acid and lesser concentrations of sulfuric), be sure to protect your eyes (#1 concern IMO) as well as exposed skin areas.

If you do happen to get any on your hands - be sure to avoid any hand-to-face contact (as in rub your eyes or nose) even if they are irritated - until you can get contacted areas rinsed off...

Certain acids (low pH) and caustics (high pH), too (like sodium hydroxide) can cause permanent eye damage if not treated IMMEDIATELY with copious quantities of water followed by qualified medical attention. BE CAREFUL - you only get one set of eyes!

[Joe M.]

Re: Re-Tag?

I am thinking of masking off the area around the flat with duct tape and then applying the gel with a q-tip (thanks Michael!) and then laying plastic wrap on top and watching it for a few days. Sound like a workable idea???