C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Feb 27, 2016 | 01:03 AM
  #21  
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[QUOTE=Brcmpbl;1591649419]Depends what you want, really.

If you want the car to appear as it did from the factory, get the Astro script on the glass. All cars did have the script in 1974, you're correct.

If I was replacing the door glass on my 1970 with AC, I would get the glass with the Astro script, but I like that kind of thing.QUOTe
Yes, I agree. I like to keep it as original as possible. I think I found the answer I was looking for.

Thank you
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Old Feb 27, 2016 | 08:15 AM
  #22  
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Hi mf,
If you're interested in maintaining your car's 'originality' you might also want to consider buying a side window that has a date code on it too.
Originally all the glass in a car was date coded using a 2 letter code indicating when the glass was produced.
Some of the glass suppliers offer this service.
The code is part of the glass manufacturer's logo and other information that was etched into the glass when it was made.
It's a VERY small detail both literally and figuratively but one you should at least be aware of before you purchase the glass.
Regards,
Alan
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Old Feb 27, 2016 | 02:26 PM
  #23  
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Originally Posted by Alan 71
Hi mf,
If you're interested in maintaining your car's 'originality' you might also want to consider buying a side window that has a date code on it too.
Originally all the glass in a car was date coded using a 2 letter code indicating when the glass was produced.
Some of the glass suppliers offer this service.
The code is part of the glass manufacturer's logo and other information that was etched into the glass when it was made.
It's a VERY small detail both literally and figuratively but one you should at least be aware of before you purchase the glass.
Regards,
Alan
Hi Alan,

I did find that at some of the manufactures. My car is going in for paint on 3/1 so I'm going to have the window sent to them for install.
Almost done with my restoration. I just have some little details left.
Your information was very helpful, thanks.

Virgil
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Old Feb 27, 2016 | 03:23 PM
  #24  
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Hi Virgil,
We're going to see some pictures after a bit…. right?
Regards,
Alan
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Old Feb 27, 2016 | 07:35 PM
  #25  
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Originally Posted by Alan 71
Hi Virgil,
We're going to see some pictures after a bit…. right?
Regards,
Alan
I won't get the car back for about a month and a half, then I will send some pics as soon as I can. I only usually drive once a week. I'm disabled and so it might take me a bit. This is my only car, I figured I might as well enjoy myself on the way to see the doc.


Virgil
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Old Feb 29, 2016 | 06:41 AM
  #26  
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I have a non A/C car I'm adding A/C to. I see the little tube that goes to the back for the Astro Vent actuators. Can anyone tell me if vacuum opens them or closes them? I'm wondering if I need to supply vacuum to them (to keep them closed) or just leave the tube open.

In other words, with the tube to the actuator disconnected, are the doors open or closed?
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Old Feb 29, 2016 | 07:17 AM
  #27  
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Hi L,
The 2 doors at the rear are open all the time, even with a system that's not working.
Moving the right side heater/defroster thumb wheel from C to H supplies vacuum to close the doors.
A/C cars have a metal block-off plate in place of the doors and their operating mechanism. Perhaps you'd want to find one of those and use it as it was used on original a/c cars.
Regards,
Alan

Last edited by Alan 71; Feb 29, 2016 at 07:19 AM.
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Old Feb 29, 2016 | 07:24 AM
  #28  
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Thanks.

I was thinking more hooking it to engine vacuum through a solenoid so it was open when the A/C was off, but closed when the engine was on and A/C was on. Assuming my actuators are still functional, you've saved me another act of contortion.
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