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Old Nov 28, 2017 | 09:21 PM
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Default Vin and options

Hello, how can find out build list and what my 1971 was equipped when it left the factory with vin. Really I am tying to validate tranny and if card had ac. Thanks.
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Old Nov 28, 2017 | 09:22 PM
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if the gas tank is original and never been out of the car there will be a "build sheet" on top of the tank. if not shy of having the original window sticker or other dealer paper work or POP you have no way of knowing what options
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Old Nov 28, 2017 | 09:47 PM
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I would suggest getting a NCRS book for your car.
You can also order the delivery information - which will tell you where the car was delivered. (if you join NCRS)

The trans should have the last part of the VIN stamped on it. My 71- 4 speed did.

You can check most parts by the build date - usually within 2 to 5 weeks ahead of the cars build date.

If the motor is original the engine pad stamping will tell you the HP and trans type. The rear has a date code and ratio stamp.

Most Corvette parts have a date of manufacture and a serial #. The NCRS books will give you the info. You have to do some detective work to figure it out. Unless you have the build sheet or dealers sheets / window sticker - there is no definitive answer to the cars build.

If the parts #'s / dates match it's justification to assume it came on the car. (for me)

Hope this helps...

Last edited by BLUE1972; Nov 28, 2017 at 09:52 PM.
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Old Nov 28, 2017 | 10:20 PM
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Thanks, my challenge is to determine what type of tranny and if it had ac when new so I order the correct radiator. Once I ordered the wrong rad which really messed things up. Thanks

[QUOTE=BLUE1972;1596065362]I would suggest getting a NCRS book for your car.
You can also order the delivery information - which will tell you where the car was delivered. (if you join NCRS)

The trans should have the last part of the VIN stamped on it. My 71- 4 speed did.

You can check most parts by the build date - usually within 2 to 5 weeks ahead of the cars build date.

If the motor is original the engine pad stamping will tell you the HP and trans type. The rear has a date code and ratio stamp.

Most Corvette parts have a date of manufacture and a serial #. The NCRS books will give you the info. You have to do some detective work to figure it out. Unless you have the build sheet or dealers sheets / window sticker - there is no definitive answer to the cars build.

If the parts #'s / dates match it's justification to assume it came on the car. (for me)

Hope this helps...[/QUOTE]
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Old Nov 28, 2017 | 11:49 PM
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Without the tank sticker, windows sticker or other original form of GM factory documentation detailing your options there is NO WAY to know if your car actually came from the factory with AC unless you were the original owner. Period.

Your original transmission would have a partial vin stamped into it. But if its not your original trans then once again, no way to know for sure.

There are no records available for your year car anywhere. GM claims they do not have them.
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Old Nov 29, 2017 | 06:19 AM
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Hi jby,
The transmission is stamped on the side of the main case's flange.
There are typically 2 stamps.
The first was done when the transmission was assembled and will indicate when it was built and in what configuration.
The second was done at the assembly plant, ( St.Louis for Corvettes), and indicates what vehicle the transmission was first installed in.
Regards,
Alan

I think there are some signs in the engine compartment and in the interior that are pretty good indicators if the car was originally equipped with the a/c option when it left St.Louis.


The stamps on the side of the transmission case.


Last edited by Alan 71; Nov 29, 2017 at 06:21 AM.
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Old Nov 29, 2017 | 06:23 AM
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As far as trans its either auto or four speed and there should be enough clues left if ac was removed. Is the car that modified or gutted that you can not tell these things?
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Old Nov 29, 2017 | 06:44 AM
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There is no option information in the VIN.

Last edited by Easy Mike; Nov 29, 2017 at 06:45 AM.
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Old Nov 29, 2017 | 07:12 AM
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Originally Posted by Eljay
As far as trans its either auto or four speed and there should be enough clues left if ac was removed. Is the car that modified or gutted that you can not tell these things?

Dash vents, center dash pod, holes &/or clips for hoses on the fender wells & radiator support, condenser, etc. etc.
It is rare that AC would be removed, and every single component would be eliminated & holes patched.
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Old Nov 29, 2017 | 07:51 AM
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Originally Posted by jbakyy
Thanks, my challenge is to determine what type of tranny and if it had ac when new so I order the correct radiator. Once I ordered the wrong rad which really messed things up. Thanks
Unless you are restoring the car back to original, order a radiator based on what components are currently in the car.

A few pics of the interior and engine bay will help in identifying what you have.
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Old Nov 29, 2017 | 08:50 AM
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A removable cross member, which supports the transmission is a sign of a car with an automatic.

The lower vent on the driver side is blocked off , as is the Astro Ventilation in the rear on A/C cars. As stated above - Center vents and lack if the vent controls (slide handles) on the console also indicate A/C.

The rear yokes and universal caps can give info on the motor if thy are original.

The list goes on. You have to do some research and use the NCRS and Restoration guides - you can figure it out.

Power steering and brakes won't affect much - order parts as it is currently equipped. The shape of the hole for the power brake booster on the firewall can give clues to the original setup.

Take your time, read - use the books available, make a written list of what you find and you will figure it out.

I did my 71 when I got it. It was a running / driving basket case. I got the options 98%. I figured if it had power everything it had power steering - nope. A/C, Leather, PB, PW, Tinted Glass, ETC.
The original owner called and had the window sticker. I had everything correct but I added PS to the list. Well my list is correct now - I added PS.
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Old Nov 29, 2017 | 09:00 AM
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A very odd and difficult part my 69 ac car has that I don't know how you would remove and replace cleanly is in the passenger front wheel well.
My car has a fiberglass piece protecting some plumbing that goes through there from the AC.
It makes it extremely difficult to reach the top bolt that mounts the radiator support on that side. Trust me
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