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Dec 12, 2013 | 11:19 PM

Plasticfreak

Thread Starter

Melting Slicks

Joined: Aug 2013

Posts: 2,178

Likes: 111

From: Plains Pa

Question

[Please explain the vents on the rear deck of my 75 and why someone covered them up with fiberglass or bondo? Thanks in advance!COLOR="Blue"][/COLOR]

Dec 12, 2013 | 11:22 PM

MSGT-R

Pro

Joined: Oct 2013

Posts: 620

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From: Denver CO

Flow through vents from the interior. They may have leaked (?). They do have a tendancy to gather a lot of leaves and the drains plug up if not maintained.

Dec 12, 2013 | 11:28 PM

chstitans42

TheCorvetteBen

Joined: Feb 2007

Posts: 4,987

Likes: 144

From: Van Alstyne, TX

Quote:

Originally Posted by MSGT-R

Flow through vents from the interior. They may have leaked (?). They do have a tendancy to gather a lot of leaves and the drains plug up if not maintained.

Not in a 1975. What they were was the last remnants of the old astro ventilation flow through system that was phased out a few years before 1975. Your vent should just have vents in little recessed rectangles held in by four screws nothing more. They should not have been leaking and I believe were just covered by a previous owner who did not like them.

Dec 12, 2013 | 11:47 PM

MSGT-R

Pro

Joined: Oct 2013

Posts: 620

Likes: 117

From: Denver CO

Sorry.. I have a 71 with the Astro Ventilation. Didn't know that it was discontinued.

Dec 13, 2013 | 05:44 AM

oldgto

Safety Car

Joined: Feb 2012

Posts: 4,705

Likes: 983

From: Orlando FL

I also have a 71... I glued window screen to the bottom of my vents to keep the leaves and other stuff out of there. Once the vents are installed, you can`t see it unless you`re really looking for it.
I know this won`t make it for a judged car, but just a thought for a "driver".

Dec 13, 2013 | 09:16 AM

Easy Mike

Team Owner

Joined: Jun 2000

Posts: 38,923

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From: Southbound

Cruise-In II Veteran

No need to get wrapped up on Astro-Ventilation. It's nothing more than the trade name GM used for the flow through ventilation system used on several car lines in addition to Corvette.

By 75, for a non-AC car, the rear deck vents are probably not functional. They're gone forever beginning with the 76 model year.

Dec 13, 2013 | 09:19 AM

Eljay

Burning Brakes

Joined: Jun 2013

Posts: 1,076

Likes: 148

From: Hunterdon Cty NJ

I think the script on the windows is pretty cool.

Dec 13, 2013 | 10:18 AM

chstitans42

TheCorvetteBen

Joined: Feb 2007

Posts: 4,987

Likes: 144

From: Van Alstyne, TX

Quote:

Originally Posted by Eljay

I think the script on the windows is pretty cool.

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Dec 13, 2013 | 10:40 AM

Easy Mike

Team Owner

Joined: Jun 2000

Posts: 38,923

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From: Southbound

Cruise-In II Veteran

Quote:

Originally Posted by Eljay

I think the script on the windows is pretty cool.

Back in the last millennium, I owned three 68 Impalas. They also had the Astro-Ventilation scripts on the doors glasses and the same chrome dash vent ***** as C3s.

Dec 13, 2013 | 11:26 AM

#10

GreenDream

Pro

Joined: Apr 2008

Posts: 681

Likes: 11

From: Carson City MI

My 74 still has astro-ventilation.

Dec 13, 2013 | 12:59 PM

#11

corbettworks

Intermediate

Joined: Aug 2011

Posts: 43

Likes: 12

From: Brentwood TN

I pretend I have Astro Ventilation in my '77.

Dec 13, 2013 | 03:08 PM

#12

Ontario73

Pro

Joined: Apr 2013

Posts: 535

Likes: 8

From: London Ontario

I have a non A/C 73 with functional astro vents. Believe it or not it works quite well. I'm a smoker (yeah I know) and you can really see it draw the smoke out on the highway.

Dec 13, 2013 | 08:26 PM

#13

jnealg

Burning Brakes

Joined: Apr 2010

Posts: 1,018

Likes: 9

From: Winston Ga.

My 75 non ac has functional astro vents. Well they would be if I fixed the vac line to the actuator.

Dec 13, 2013 | 08:51 PM

#14

Plasticfreak

Thread Starter

Melting Slicks

Joined: Aug 2013

Posts: 2,178

Likes: 111

From: Plains Pa

My car has air but I wondered why the po put bondo over them to cover them up? I don't understand

Dec 14, 2013 | 06:35 AM

#15

jnealg

Burning Brakes

Joined: Apr 2010

Posts: 1,018

Likes: 9

From: Winston Ga.

Cleaner look? Like rebadging or shaving handles.

Since it's an ac car you should have the inner cabin ports blocked off. Maybe the po didn't understand this and just saw holes.