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Engine Code Gone....Is my engine worthless? (originality-wise)

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Old Jan 13, 2014 | 03:46 PM
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Default Engine Code Gone....Is my engine worthless? (originality-wise)

I'm pulling the engine from my 70. It's an L46. I am going to swap in a newer 350 from a truck. Before I pulled it I was planning on documenting the engine running and some engine codes on video. When I inspected the block the engine code is not there. There is a 9 digit alpha numeric code that is obviously hand stamped (double strikes and very crooked). I am the 3rd owner. The second owner told me he had the engine rebuilt in the '80s. I'm guessing the rebuilder milled the block and stamped his own code into it (possibly for warranty or reputation reasons).

Can the code be retrieved? I recall hearing about a method using iron filings and a magnet to cause the code to show up.

I was planning on putting this engine on a cradle, bagging it, and storing it in hopes that it might increase the value of the car if I were to sell it. But If I can't prove the engine "matches" the car then it has no more value than any other 1970 L46 and I may as well sell it.

Any opinions are welcome. Thanks.
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Old Jan 13, 2014 | 03:53 PM
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Why don't you post a picture of what you have? I think the methods you're talking about are used primarily by the FBI or other high end crime labs. They would probably cost more to perform than you would gain in value. You might be better off seeing if the second owner had any documentation of the rebuild since this is a common problem.
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Old Jan 13, 2014 | 04:07 PM
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http://s777.photobucket.com/user/wil...101fa.jpg.html
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Old Jan 13, 2014 | 04:07 PM
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Hi w,
I think the block you have is worth hanging on to. It still is the block with the right casting number and date for your car!
Are other numbered and dated parts like the carb, intake, heads, exhaust manifolds, fuel pump and water pump still there? They would CERTAINLY be valuable if the car was ever to be put back into original condition.
Regards,
Alan
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Old Jan 13, 2014 | 04:08 PM
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Old Jan 13, 2014 | 04:20 PM
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CE blocks were usually warranty replacement engines. Most of them never had VIN derivitives stamped on them.

Last edited by Easy Mike; Jan 13, 2014 at 04:23 PM.
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Old Jan 13, 2014 | 04:30 PM
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At least check the casting number and date to see if it might be the original block.
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Old Jan 13, 2014 | 04:32 PM
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Raphiki -I am still in contact with the original owner. Nearly every time I see him I ask him if he has uncovered any documents. I'm not holding my breath. He's not the kind of guy that retains documents. And it's been 15 years since I bought it from him. Meanwhile he's gotten divorced and moved twice.

Alan - You're right about everything you've said and you've caused me to do alot more thinking. I thought maybe the stuff that I have would be valuable to an owner of another '70 RIGHT NOW. I don't know if I'll ever sell the thing anyway. And I really don't think I'll ever put the original engine back in there. The second owner already lost the original transmission.

I guess I've got some things to think about.
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Old Jan 13, 2014 | 04:35 PM
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Old Jan 13, 2014 | 04:45 PM
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Date code is H 21 9. August 21 1969. And the casting number is 3970010. This is correct for my car, but it's also correct for loads of GM cars built shortly after this date.
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Old Jan 13, 2014 | 05:04 PM
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Originally Posted by wilesre
Date code is H 21 9. August 21 1969. And the casting number is 3970010. This is correct for my car, but it's also correct for loads of GM cars built shortly after this date.
1970 Corvettes didn't go into production until Jan 1970. It's very unlikely that an Aug. '69 block would sit around that long even if your car was the first one off the line.

This, and the CE stamp makes me think this is not the original engine.
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Old Jan 13, 2014 | 05:09 PM
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Thanks Easy Mike. That's good and interesting information. My understanding (from the second owner) is that the first owner did circle track racing with it right after he bought it. So maybe he blew the engine and had it replaced under warranty. He also drove it in the winter (it was his only car) almost all the issues with the body occurred with the first owner.

The VIN dates the car to the first few days in June 1970. That means this engine was sitting around for a year or so before it was installed. ????
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Old Jan 13, 2014 | 05:13 PM
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Originally Posted by Mike Ward
1970 Corvettes didn't go into production until Jan 1970. It's very unlikely that an Aug. '69 block would sit around that long even if your car was the first one off the line.

This, and the CE stamp makes me think this is not the original engine.
Right. You posted this while I was in the middle of my last post.

So can we assume that this engine was installed in another vehicle in late '69 (for whatever reason) and later taken out of that vehicle and installed in mine?
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Old Jan 13, 2014 | 05:36 PM
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Originally Posted by wilesre
Right. You posted this while I was in the middle of my last post.

So can we assume that this engine was installed in another vehicle in late '69 (for whatever reason) and later taken out of that vehicle and installed in mine?
If the stamping is an original CE-and it does appear to be- all we know is that it's a warranty replacement or over the counter crate engine. The 9 after the CE confirms it was assembled in 1969. The B is thought to mean it's the second set of serial numbers for that year.

Beyond that, it's anybody's guess.
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