69ttop502

Call it corvetteforum paranoia or curiosity but I am finally getting this 62 together and am starting to log photos and numbers and was curious if this stamp pad would get full credit if it was judged. It looks great to me as the broach marks appear clearly as well. Also, take a look a the vin tag and tell me if it appears to be the original fastening. Thanks to all. The car is a 340 horse 4 speed car. The casting date on the block is sept. 28 1961. It appears from the pic, I need to get the little bit of paint out of a couple numbers.




Bill

Plasticman

Looks good. Your vin tag looks better than mine (they hit mine with the spot welder a couple of times on each end).

But I am sure you will get some "fails" (glass 1/2 empty guys). On the last engine pad "test", they said that the pad should not of been painted, so no reason for paint to be in the lettering.

Plasticman

53 Blue Flame Brett

Looks real to me, also. Broach marks are there. Not fake broach marking either.

Kensmith

Frankie the Fink

Yup! Looks very close to the pad on my original '61 motor...

knight37128

Appears to be an original pad.

69ttop502

Thanks for the look everyone. I will sleep just a little better tonight.

Mike Ward

Are you asking would it probably pass NCRS judging, or is it an original pad from the factory. Two different questions, and probably two different answers.

69ttop502

Actually Mike, I am more interested if this appears to be factory original as this car will never be presented for judging by me. Now the next owner I can't say. It is fun going through the car and checking numbers and casting dates to see what seems original and not. I will be selling the car in a month or so, so I am putting together all the info for potential buyers.

Bill

Ironcross

.
Looks good to me!........

....Heres mine and I know its right...

ratmotortom

Can't say on the VIN tag since I know nothing about how they should be on a 62, but I would say your stamp pad appears to be the real deal.

Nicola

Gents,
can one of you please define/describe "broach marks" since the pics on this thread are so good for those of us who need an education
thanks from one and all

61 Silver

Nice picture of the 461X head symbol. The flat top hump symbol is from a pre-February 1962 head.

Ray

Blackfoot Big Block

I'll give this a try.

When GM machined the block decks they used a machine tool called a surface broach. This machine uses a tool that has rows (and columns) of teeth which are drawn across the block longitudinally (along the axis of the crankshaft).

The broaching process leaves tool marks (typically referred to as broach marks) from the teeth.

If you look at the (excellent) photos carefully, you'll see some fine lines that are perpendicular to the stamped numbers and letters. Those are the broach marks

If you take your block to a machine shop to have the block decked, they would machine away the top surface of the block's decks and remove the factory broach marks (and stampings). Typically a machine shop would use a circular cutter that would leave circular tool marks.

I hope this helps...

a560156

I see you are new so please either check the archives or look in the FAQ sticky thread at the top of the C1/C2section. This question is raised often.

vettebuyer6369

Mike, I'd be interested to hear why you think there would be two different answers.

vettebuyer6369

If someone stated that because at some time, over a 47 year time span, somebody, somewhere got paint on the pad, thereby casting doubt on the veracity of the numbers, I would politely disregard their opinion.

1snake

Maybe he noticed the VERY uneven depth of the stampings and the oddity in the upper left of the stamp pad, as if the pad was resurfaced with the head installed. I'm not an expert but it looks questionable compared to the many pads I've seen up close.

knight37128

Here is the gang holder for the numbers:



Now think about it. As the numbers were used some of them got worn more than others.

Thus the "uneven depth" (as you put it) in the numbers.

Do you really think that GM would only use a number once then throw it away?

a560156

Good call Mike.