72 Coupe missing rear air plenum doors and actuator

[HulDug72]

I have a 72 Coupe/Automatic/AC that I purchased last year. While restoring the interior I stripped it down to the bare glass and metal, threw most of it away and started anew. When I stripped the rear compartment down, I could not locate the REAR PLENUM AIR DOOR. There were no vacuum hoses, no actuator assembly, no doors... nothing except a fiberglass plenum underneath the vent grilles with drain hoses extending into each rear wheelwell. The plenum has no holes in it where the vent doors would have been. The 72 Corvette service manual shows this system on both the Coupe and Conv models, but makes no mention if it is left off other models or option lists. I thought that all 72s had pneumatic vent door control for the rear compartment. Or was it an AC only addition? If so, do I have an AC added car? It sure looks stock..(and works great). Can anyone set me straight? Thanks.

Doug Hulsey

 

[Vettehead Mikey]

I think the AC cars did not have the hardware you are looking for, it was non-AC cars only.

 

[HulDug72]

Thanks, Appreciate the response.

 

[Erik S. Klein]

I agree with Mikey. The "Astro Ventilation" stuff wasn't needed on AC cars such as ours.

Cheers!

 

[HulDug72]

Thanks, thats a great lookin 72 LT-1 ! I cant figure out how to post a pic of my 72.

 

[Erik S. Klein]

Thanks, thats a great lookin 72 LT-1 ! I cant figure out how to post a pic of my 72.

Thanks! She needs a bit of work, but she's great from 10 feet!

For posting help, check out http://www.corvetteactioncenter.com/forums/showthread.php?t=48428 and the links from there.

Good luck!

 

[HulDug72]

My Coupe is also a 10 footer on the outside, but showroom on the inside. Paint is 4 years old, has cracks, scrapes that hide until you get really close to it. Has a Rebuilt engine to 72 specs, engine block is not orig, but all other engine parts are orig. Restored interior to showroom -- absolutely everthing inside is as-it-was in 72. Still having problems with vacuum system -- the right headlight needs help to come up, but goes down by itself. But I do enjoy it.