Broach Marks and Pad Stamps

[William L.]

Re: Broach Marks and Pad Stamps

I'm surprised no one noticed that in the date on my pad there is a O and a zero ! O6 06 instead of 06 06

[Tom S.]

Re: Broach Marks and Pad Stamps

That is good info. Thanks guy's I have wondered about that bounce for a long time. I didn't know what it was. Now I do. Tom

[Steve B.]

Re: Broach Marks and Pad Stamps

I'm surprised no one noticed that in the date on my pad there is a O and a zero ! O6 06 instead of 06 06

Bill, my date stamp has an O and a 0 too. If you have the urge to unload your car with that non perfect pad, I will gladly take it off your hands.

[Michael J.]

Re: Broach Marks and Pad Stamps

Here are the pads from my two cars:

[Harmon C.]

Re: Broach Marks and Pad Stamps

Hi Roy! I know that opinions run all over the place. Probably as many as we have members. I will probably never have my car judged and since it has the marks and stamps from when I bought it in '64 and the previous owners told me they never had the engine out (and no one restamped then) I am certain that I have the originals on the pad. My interest lies mainly in how long the cutting tools lasted and the extreme variations of the marks. I have a pretty good idea of the stamps depth variations. My marks are so light that a tool change likely came soon after my engine, but having been a machine shop supv. and a production supv. decades ago in a UAW shop I know much tooling was used well beyond its life to keep the lines going.

Steve

I think the broach marks were smooth or light with the new cutters and as they got dull the marks got rougher and the tooling was resharpened.
That is the way I think it was with broachs where I worked. That would make your block near the first not the last.

[William L.]

Re: Broach Marks and Pad Stamps

Bill, my date stamp has an O and a 0 too. If you have the urge to unload your car with that non perfect pad, I will gladly take it off your hands.

Steve
Since we got Top Flight and our B/G last year we have put her back on the street and been having a ball. We even turn down the NCM because we didn't want to give up the fun of driving her for a year.
A 435 with 4:11's and my favorite Gail on a warm summer Saturday night. It just doesn't get much better than that.
"Lace"

[Dick W.]

Re: Broach Marks and Pad Stamps

No wonder I did not see any extra numbers, I was looking at the mouse motor pad Bill posted.

[Steven B.]

Re: Broach Marks and Pad Stamps

I think the broach marks were smooth or light with the new cutters and as they got dull the marks got rougher and the tooling was resharpened.
That is the way I think it was with broachs where I worked. That would make your block near the first not the last.

Lyle, thanks for catching that. Yep, new tooling showed very little if any marks where I worked, also. Depending what we were cutting, and how many thous. we were taking off per pass, we would get from a few hundred to thousands of cuts. Pieces with old tooling looked like Ruffles pot. chips.

Steve

[Robert G.]

Re: Broach Marks and Pad Stamps

I'm surprised no one noticed that in the date on my pad there is a O and a zero ! O6 06 instead of 06 06

Take a look at the photo of a 435 car I posted and you will note the same build date and horsepower engine, but it has to O's. That's a strange occurrence. I would have expected it to be the same as yours.

[William L.]

Re: Broach Marks and Pad Stamps

Take a look at the photo of a 435 car I posted and you will note the same build date and horsepower engine, but it has to O's. That's a strange occurrence. I would have expected it to be the same as yours.

Robert
I think you may have answered your own question.
Here's one that was on ebay that seemed to have a "few questionable items" related to dates and body numbers.
Another answer may be that they used more than one gang holder in the Tonawanda plant? Maybe Mr. Hinckly can answer that.
I also know that mine is not the only one stamped like that. Steve Bramati is like that and I have seen 2 others pads stamped on the same day that are stamped with one O and one 0.
Bill

[Steven B.]

Re: Broach Marks and Pad Stamps

It makes perfect sense that there were multiple gangs. I worked in two automotive plants and in both we had multiple gangs and used them simultaneously. Often times any similiar looking digit or letter was used if the correct one was not available or just out of convenience. I's and 1's, O's, even D's, and 0's, S's and 5's were interchanged. GM plants assembly techs and QC were no different than others therefore there are alot of anomolies. Double stamping and shadows are out there, some of them mine. Most were let go because no one wanted to build up alot of rework. Time is money as they say.

[Dick W.]

Re: Broach Marks and Pad Stamps

Wait until you see a C-3 stamp with three different zero's. One round, one oval, and the third almost a square

[Mike G.]

Re: Broach Marks and Pad Stamps

here is the pad from my 70. before and after clean-up. clear broach marks and stamp... normal pad

[Nick C.]

Re: Broach Marks and Pad Stamps

Here are the pads from my two cars:

You are claiming the 67 pad is OEM?

[Michael J.]

Re: Broach Marks and Pad Stamps

You are claiming the 67 pad is OEM?

Yep, I have full documentation.