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Old Nov 1, 2012 | 11:10 AM
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I just bought this 1977 Corvette. I've done a little research and found out that the VIN and plate in the door jam all point to this being a '77. Obviously, the car has been worked on and still needs more work to go. My question is, what are the tell tell signs that someone did a rear clip graft? Interior looks origanal too, down to the pull shade that covers the cargo area. I did find out that the car was built in St. Louis in late Oct 1976. I can take more pictures of whatever I need to. Just curious if this is a graft, or a factory 'mistake'. Thank you.

Benjamin

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Old Nov 1, 2012 | 11:25 AM
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I think that telltale sign #1, is that the car has the "bubble back" window, which came into production in '78.
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Old Nov 1, 2012 | 11:31 AM
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Originally Posted by benbrownfield
...what are the tell tell signs that someone did a rear clip graft?...
All 77s were tunnel back. The back glass is vertical.


The big back window in your pic was not introducted until the 1978 model year.

...Just curious if this is a...factory 'mistake'...
It is not a factory mistake.

All 77 VINs are 1Z37*7S4xxxxx. Asterisk stands for the engine code.

All 78 VINs are 1Z87*8S4xxxxx except Pace Cars.

A Corvette in production in October 1976 would have been the 1977 model year.

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Old Nov 1, 2012 | 11:35 AM
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I highly doubt it is a factory mistake.
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Old Nov 1, 2012 | 11:59 AM
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Originally Posted by Ret.Horsecop13
I highly doubt it is a factory mistake.


If it was clipped, you should see a seam behind the seats where the two halves were mated - - it should be visible under the carpet as well as underneath the car unless is was concealed with spray undercoating.

Just a thought - - put your fingers on the vin plate (driver's A pillar) and make sure it doesn't slide or move - - I've seen a couple of "vin switches" that are revealed by irregularities like this indicating other problems about the car.
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Old Nov 1, 2012 | 12:15 PM
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Thank you for the replies. My VIN is 1Z37L7S408290. That leads me to believe the body/frame is a 77. The dash and interior is deffenantly 77. What is the best way to tell if someone took the time and money to put a bubble back on it along with 78 trim pieces in the rear of the car? The story I got from the guy i got it from was he only owned the car a few months (had to sell for personal reasons) and that he bought it from the origanal owner who siad he never changed anything about the car. I'm just trying to find the truth so I know what I have and how I want to proceed with the resto. Thank you.
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Old Nov 1, 2012 | 12:20 PM
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Originally Posted by CQRT


If it was clipped, you should see a seam behind the seats where the two halves were mated - - it should be visible under the carpet as well as underneath the car unless is was concealed with spray undercoating.

Just a thought - - put your fingers on the vin plate (driver's A pillar) and make sure it doesn't slide or move - - I've seen a couple of "vin switches" that are revealed by irregularities like this indicating other problems about the car.
Thank you. That was what I was looking for. Just in case I don't find a seem, where should I go from there? Is there any ID marks on the rear of the car? Like modern cars have the VIN stamped on all the windows?
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Old Nov 1, 2012 | 12:23 PM
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It's unfortunate that so many stories are told from previous owners that are just plain lies. There is no way the car was built like that from the factory.

Les
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Old Nov 1, 2012 | 12:27 PM
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Originally Posted by benbrownfield
...My VIN is 1Z37L7S408290..
VIN is correct for a 77. #8290 would have been assembled in October, 1976. Time/Build date in the upper right corner of the trim tag will give you the day of the month.

...What is the best way to tell if someone took the time and money to put a bubble back on it along with 78 trim pieces in the rear of the car?...
Someone obviously did.

...bought it from the origanal owner who siad he never changed anything about the car. I'm just trying to find the truth...
Someone --the original owner or the second owner -- put the big back window on it.

If the swap was only the rear surround panel, glass, and fuel tank, you may not find obvious signs of a clip being swapped.

The frame is stamped with a VIN derivitive on the top of the rail, drivers side, just in front of the #4 body body. You may or may not be able to see this stamp.


Last edited by Easy Mike; Nov 1, 2012 at 12:32 PM.
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Old Nov 1, 2012 | 12:51 PM
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Originally Posted by Easy Mike
VIN is correct for a 77. #8290 would have been assembled in October, 1976. Time/Build date in the upper right corner of the trim tag will give you the day of the month.



Someone obviously did.



Someone --the original owner or the second owner -- put the big back window on it.

If the swap was only the rear surround panel, glass, and fuel tank, you may not find obvious signs of a clip being swapped.

The frame is stamped with a VIN derivitive on the top of the rail, drivers side, just in front of the #4 body body. You may or may not be able to see this stamp.

Ok, this evening after work, I'm going to check for seems. Is there a service that I can buy that will give me the complete history of this vette? From build order parts to origanal owner? It may help with this issue, but would be helpful and usefull later.
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Old Nov 1, 2012 | 01:08 PM
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Originally Posted by benbrownfield
...Is there a service that I can buy that will give me the complete history of this vette?...
No.

You can go here http://www.corvetteactioncenter.com/...x.php?cmd=area and see if you can obtain a copy of the original dealer invoice for your 77. The invoice will list all the options on the car, the original dealer, original prices, shipping date, etc., but it will not tell you any owner information.

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Old Nov 1, 2012 | 02:21 PM
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i'd ask the guy i got the car from for name and address/phone number of the previous owner he got the car from, if it's only been a few months he should be able to come up with it.
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Old Nov 1, 2012 | 05:09 PM
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Originally Posted by benbrownfield
Thank you for the replies.... What is the best way to tell if someone took the time and money to put a bubble back on it along with 78 trim pieces in the rear of the car?
Is it just me, that's overlooking the 800lb gorilla in the room?

The car has a '78-'81 rear window, a '78-'79 rear spoiler, and at least a '78-'79 "Corvette" logo on the rear bumper, if not the entire bumper.....yet the car's "identity" says it's a '77. Me thinks somebody had a '77, but liked the newer rear end and did a "swaperoo".
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Old Nov 1, 2012 | 05:26 PM
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Originally Posted by leadfoot4
Is it just me, that's overlooking the 800lb gorilla in the room?

The car has a '78-'81 rear window, a '78-'79 rear spoiler, and at least a '78-'79 "Corvette" logo on the rear bumper, if not the entire bumper.....yet the car's "identity" says it's a '77. Me thinks somebody had a '77, but liked the newer rear end and did a "swaperoo".
Yes, more like a 3600lb gorilla. The emplem on the gas lid says 25th anniversary and so does the emblem on the nose and shifter button, but anyone can change emblems. I'm just trying to figure out what I have so I can hopefully take it back to origanal. Personally, I like the sugar scoop, straight glass rear end, but I'm not going to tackle that project if I don't have too. Plus, from the stories I've read, somebody had more time amd money then sense if they reconstructed the rear clip. Not worth it from what I've read.
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Old Nov 1, 2012 | 06:51 PM
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Alarm bells ringing in my head but I hope I'm wrong. Where have you checked on the car for VIN #s? It would be far easier to change the trim tag and VIN plate from a 77 onto a 78 than to change the rear clip. I've seen Harley titles used on bikes/ frames they didn't belong to. On your Vette you should be able to fairly easily check engine block and head numbers to see if they match the 77 number, or if they even match each other. If no numbers match it's a more difficult task. I'd be most concerned that you might be dealing with a stolen car re-titled under a title from another car. I sincerely hope this is not the case.
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Old Nov 1, 2012 | 08:37 PM
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I bet someone went to the expense and effort to swap a bubble rear glass.... of course, now we ask "why", I'm sure his (or her) response would be "because I wanted to."

I don't think VIN swap because thieves are lazy, and they're not going to swap the dash from a 77 into a 78 - that would be a large amount of work.


Heck, my dad occasionally retells me the story of cutting the split out of a split window Corvette so they could put the 65 window in it.... (if you listen closely you can hear the purists scream)
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Old Nov 1, 2012 | 09:13 PM
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Originally Posted by SuperBuickGuy
I bet someone went to the expense and effort to swap a bubble rear glass.... of course, now we ask "why", I'm sure his (or her) response would be "because I wanted to."

I don't think VIN swap because thieves are lazy, and they're not going to swap the dash from a 77 into a 78 - that would be a large amount of work.


Heck, my dad occasionally retells me the story of cutting the split out of a split window Corvette so they could put the 65 window in it.... (if you listen closely you can hear the purists scream)
SuperBuickGuy, I tend to agree with you. I did get ahold of the contact info who is suppose to be the origanal owner. Hopefully I can get some answers from him. I did check real quick between breaks if the VIN tag was loose or doubled up. It appears to be solid and not tampered with. I will still check for seams and upload pics if I find anything. Thank ya'll for the help.
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Old Nov 1, 2012 | 09:37 PM
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Originally Posted by SuperBuickGuy
I bet someone went to the expense and effort to swap a bubble rear glass.... of course, now we ask "why", I'm sure his (or her) response would be "because I wanted to."
If the whole rear clip was replaced, the first thought that comes to my mind for a reason why would be a rear end crash. I agree with the others, check all around for seams, or evidence of what was swapped.
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Old Nov 2, 2012 | 12:24 PM
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Originally Posted by benbrownfield
I just bought this 1977 Corvette. I've done a little research and found out that the VIN and plate in the door jam all point to this being a '77. Obviously, the car has been worked on and still needs more work to go. My question is, what are the tell tell signs that someone did a rear clip graft? Interior looks origanal too, down to the pull shade that covers the cargo area. I did find out that the car was built in St. Louis in late Oct 1976. I can take more pictures of whatever I need to. Just curious if this is a graft, or a factory 'mistake'. Thank you.

Benjamin

Is it me, or does the back of the T-tops look like they are low compared to the rear pillars?
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Old Nov 2, 2012 | 12:44 PM
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If a swap was done, it had to be done pretty soon after the car was new--otherwise, why not put the 80-82 rear clip on? The reason I say that, is that if there was a swap done, they sure did a picture perfect job--most swaps like this gotta customize something. That just wasn't done.

VIN tags have been switched.
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