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Identifying engine??
Le Mans Master
Joined: Apr 2006
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From: San Clemente CA
[QUOTE=joseph p;1576530423]No I think the heads etc are the same on a 65 but different on 63 and 64.
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Tech Contributor
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From: Conroe Texas
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Joseph,
The appearance of the pad is not similar to any GM engine I've seen, Corvette or not. The engines were built in one plant and installed in another. Each plant used a different set of stamps first to identify the engine and then tie it via the VIN derivative to the car. The two stamps were of a different sized font and were relatively straight and orderly being secured in a gang holder.
If you compare your photo to the example of a factory pad further up the difference is apparent.
It's impossible for others to know what the true history of your engine is or what's really inside it.
The appearance of the pad is not similar to any GM engine I've seen, Corvette or not. The engines were built in one plant and installed in another. Each plant used a different set of stamps first to identify the engine and then tie it via the VIN derivative to the car. The two stamps were of a different sized font and were relatively straight and orderly being secured in a gang holder.
If you compare your photo to the example of a factory pad further up the difference is apparent.
It's impossible for others to know what the true history of your engine is or what's really inside it.
Thread Starter
Drifting
Joined: Oct 2001
Posts: 1,444
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From: Hawthorne NJ
So you're saying that something like this has never been seen before by the experts in this area on a pre-67 block. Even though the man has owned it for 43 years and has no reason to lie as well as being known personally by his friend during those years.
Seems as though this is a rare exception from a day when the "stamper" wasn't on top of his game, or there are others out there that we don't know about, or between 1965 and 1967 this engine in it's early mileage was taken apart and restamped?
I was actually only trying to read the stamping on this engine for him, now it's turned into a mystery.
Seems as though this is a rare exception from a day when the "stamper" wasn't on top of his game, or there are others out there that we don't know about, or between 1965 and 1967 this engine in it's early mileage was taken apart and restamped?
I was actually only trying to read the stamping on this engine for him, now it's turned into a mystery.
Race Director
Joined: Jul 2001
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Joseph,
We're trying to help you out, that's all. There's no real difference to pre '67 or post '67, GM's methods didn't change much for many decades.
The 'stamper guy having a bad day' story doesn't hold up. There were two stamps by two different guys in two different plants done weeks or months apart on 'typical' engines. Yours looks like it was done all by the same guy at the same time with the same stamp. Sorry.
Here's another example of a typical, this from a '72
Note also on this one are front to rear broach marks which are seen on factory blocks. Yours seems to have a polished or rotary milled surface.
My guess is that it was decked, rebuilt and restamped, reasons unknown.
Try posting the casting number and date for the block, this might narrow down when the engine was actually made.
We're trying to help you out, that's all. There's no real difference to pre '67 or post '67, GM's methods didn't change much for many decades.
The 'stamper guy having a bad day' story doesn't hold up. There were two stamps by two different guys in two different plants done weeks or months apart on 'typical' engines. Yours looks like it was done all by the same guy at the same time with the same stamp. Sorry.
Here's another example of a typical, this from a '72
Note also on this one are front to rear broach marks which are seen on factory blocks. Yours seems to have a polished or rotary milled surface.
My guess is that it was decked, rebuilt and restamped, reasons unknown.
Try posting the casting number and date for the block, this might narrow down when the engine was actually made.
Tech Contributor
Joined: May 2005
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From: Conroe Texas
Since the engine has truly been together for so long, then I'd guess that something went wrong with the engine early in its life, the engine surface was decked, and whomever rebuilt it put the old numbers back on the block in order to keep the info (or keep it legal?). It would have pre-dated all the hoop-la that surrounds restamping engines in order to meet NCRS/Bloomington judging criteria.
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From: Grosse Ile MI
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So you're saying that something like this has never been seen before by the experts in this area on a pre-67 block. Even though the man has owned it for 43 years and has no reason to lie as well as being known personally by his friend during those years.
Seems as though this is a rare exception from a day when the "stamper" wasn't on top of his game, or there are others out there that we don't know about, or between 1965 and 1967 this engine in it's early mileage was taken apart and restamped?
I was actually only trying to read the stamping on this engine for him, now it's turned into a mystery.
Seems as though this is a rare exception from a day when the "stamper" wasn't on top of his game, or there are others out there that we don't know about, or between 1965 and 1967 this engine in it's early mileage was taken apart and restamped?
I was actually only trying to read the stamping on this engine for him, now it's turned into a mystery.
Team Owner
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From: Washington Michigan
No mystery - clearly, the engine has been replaced at some point in the past, and whoever replaced it stamped it one character at a time, using whatever he had handy, with the numbers from the original engine.
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Thread Starter
Drifting
Joined: Oct 2001
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From: Hawthorne NJ
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