Is my 68 a factory big block car, help needed!
04-10-2018, 09:01 AM
#21
Safety Car
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Type setter may have flipped the 66's hence 99's.
Editor missed it on review.
Marshal
Editor missed it on review.
Marshal
I have a 1988 copy of the Corvette Black Book.
FWIW:
In the 1988 version there is no exterior color breakdown for any production year.
The 1968 production numbers = 28566 (I think the 28599 is a typo).
BUT:
You can find the exterior color breakdown for 1968 in the
NCRS Corvette Specifications Guide.
For some reason 1969 & 1970 were "leap years" for color production statistics but every year thereafter is available.
Exterior productions numbers for 64-67 are also available.
FWIW:
In the 1988 version there is no exterior color breakdown for any production year.
The 1968 production numbers = 28566 (I think the 28599 is a typo).
BUT:
You can find the exterior color breakdown for 1968 in the
NCRS Corvette Specifications Guide.
For some reason 1969 & 1970 were "leap years" for color production statistics but every year thereafter is available.
Exterior productions numbers for 64-67 are also available.
04-10-2018, 09:50 AM
#22
Melting Slicks
I have a 1988 copy of the Corvette Black Book.
FWIW:
In the 1988 version there is no exterior color breakdown for any production year.
The 1968 production numbers = 28566 (I think the 28599 is a typo).
BUT:
You can find the exterior color breakdown for 1968 in the
NCRS Corvette Specifications Guide.
For some reason 1969 & 1970 were "leap years" as were 73 & 74 for color production statistics but every year thereafter is available.
Exterior productions numbers for 64-67 are also available.
FWIW:
In the 1988 version there is no exterior color breakdown for any production year.
The 1968 production numbers = 28566 (I think the 28599 is a typo).
BUT:
You can find the exterior color breakdown for 1968 in the
NCRS Corvette Specifications Guide.
For some reason 1969 & 1970 were "leap years" as were 73 & 74 for color production statistics but every year thereafter is available.
Exterior productions numbers for 64-67 are also available.
04-10-2018, 10:41 AM
#23
Burning Brakes
Not meaning to start a war. lol
I used this. It was on the internet so it has to be fact........
http://www.vettefacts.com/C3/1968.aspx
I used this. It was on the internet so it has to be fact........
http://www.vettefacts.com/C3/1968.aspx
04-10-2018, 10:55 AM
#24
Melting Slicks
Not meaning to start a war. lol
I used this. It was on the internet so it has to be fact........
http://www.vettefacts.com/C3/1968.aspx
I used this. It was on the internet so it has to be fact........
http://www.vettefacts.com/C3/1968.aspx
At least I can see where people are getting these numbers from. I was always of the understanding that exterior colors were not kept by GM for 68. I would still like to see other cooberated evidence that these numbers came from GM.
Does anyone have a newer NCRS spec guide that accepts these numbers as fact?
It should also be noted that the "Vettefacts" information is not all correct or complete. For example, they show the incorrect vin sequence for both 68 and 69 corvettes. The 6 digit sequential build number for 68 should start with a 4, not a 1. As well as 69 which should start with a 7, not a 1.
Also they do not list all the engine codes for 69. They completely left out all the M code engines which indicate the K66 transistorized ignition.
Last edited by ed427vette; 04-10-2018 at 11:01 AM.
04-10-2018, 11:13 AM
#25
Melting Slicks
I have the NCRS Spec guide 53-72 and the only year they show production numbers for extrerior colors is 1972. However, mine is from the 90s, so if its been updated I would like someone to please confirm that for me. I'll update my library with a new version immediately.
04-10-2018, 06:59 PM
#27
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The big blocks had a larger radiator that had 2 horizontal horns that the radiator sat on, the small blocks had a shelf with 2 vertical pins. I've read that big blocks didnt have a fuel return line so only 1 fuel line from the tank to the carb. Add this to everything elsse listd so far
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Aussiecowboy (04-11-2018)
04-10-2018, 08:04 PM
#28
Melting Slicks
The big blocks had a larger radiator that had 2 horizontal horns that the radiator sat on, the small blocks had a shelf with 2 vertical pins. I've read that big blocks didnt have a fuel return line so only 1 fuel line from the tank to the carb. Add this to everything elsse listd so far
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04-11-2018, 04:58 AM
#29
The radiator is sitting on to horns, there are pins on the bottom of the radiator and a rubber grommet between the radiator and horns. That's a great hint, I'm getting more confident that it is indeed a big block car.
So so here's the big question, if it's a very neat and clean 68 roadster with power steering and power brakes, but with a 69 block, just how much does that hurt its value?
So so here's the big question, if it's a very neat and clean 68 roadster with power steering and power brakes, but with a 69 block, just how much does that hurt its value?
04-11-2018, 07:26 AM
#30
Le Mans Master
My 68 had the wrong big block in it when I purchased it. It was built as a 390 HP car when new. It did have the return line there back to the tank.
Also no pins or round grommets on the bottom of the radiator, instead... it had what was mentioned above by Rescue Rogers, 2 brackets coming off the bottom of the support.
Also no expansion tank on the inner fender. In fact the original inner fender never even had the holes there for it to be mounted.
Also no pins or round grommets on the bottom of the radiator, instead... it had what was mentioned above by Rescue Rogers, 2 brackets coming off the bottom of the support.
Also no expansion tank on the inner fender. In fact the original inner fender never even had the holes there for it to be mounted.
04-11-2018, 07:35 AM
#31
My 68 had the wrong big block in it when I purchased it. It was built as a 390 HP car when new. It did have the return line there back to the tank.
Also no pins or round grommets on the bottom of the radiator, instead... it had what was mentioned above by Rescue Rogers, 2 brackets coming off the bottom of the support.
Also no expansion tank on the inner fender. In fact the original inner fender never even had the holes there for it to be mounted.
Also no pins or round grommets on the bottom of the radiator, instead... it had what was mentioned above by Rescue Rogers, 2 brackets coming off the bottom of the support.
Also no expansion tank on the inner fender. In fact the original inner fender never even had the holes there for it to be mounted.
04-11-2018, 07:03 PM
#32
Dementer sole survivor
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can you post pics please. That would help us out
04-12-2018, 07:21 AM
#34
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73racevette (04-12-2018)
04-12-2018, 09:38 AM
#35
Melting Slicks
Unless 68 differs from a 70, it appears your radiator support is for a small block, has pins and grommets. My 70 LS5 has cradles holding the bottom of the radiator, no pins or grommets. Maybe someone more knowledgeable of 68's can confirm or deny?
Since you say it's an aftermarket radiator, quite possible somebody swapped the support.
The tach yellow line starting at 5000 suggests a small block as well though it too could have been replaced?
Given the block isn't original, the price would be determined by the 'driver' market. If it's well done, in good condition, I don't see why it wouldn't get good money though not in the league of originals. I'd say just enjoy the car unless being a true original is your top priority.
Since you say it's an aftermarket radiator, quite possible somebody swapped the support.
The tach yellow line starting at 5000 suggests a small block as well though it too could have been replaced?
Given the block isn't original, the price would be determined by the 'driver' market. If it's well done, in good condition, I don't see why it wouldn't get good money though not in the league of originals. I'd say just enjoy the car unless being a true original is your top priority.
