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Forum: 77-81 Firebird & Trans Am TECH 02-26-2024, 10:40 AM
Replies: 8
Views: 486
Posted By 78w72
Sorry I dont have the specific answers to your...

Sorry I dont have the specific answers to your questions, but a friend of mine installed 4th gen T/A seats in a 69 firebird, from what I recall he drilled new holes in the floor to mount them with...
Forum: 77-81 Firebird & Trans Am TECH 11-18-2023, 09:08 AM
Replies: 15
Views: 997
Posted By bsblguy
the vintage air unit has flexible hoses run to...

the vintage air unit has flexible hoses run to all the vents. the drivers side vent comes out of the plenum right by the gas pedal, I have it ty wrapped as far away as possible but still hit it with...
Forum: 77-81 Firebird & Trans Am TECH 11-17-2023, 04:48 PM
Replies: 15
Views: 997
Posted By Trevor78
Is that a feature of the conversion, to have a...

Is that a feature of the conversion, to have a floor ducting there? Or stock? Mine doesn't use any of that those.

I like my stock setup, the whole reason I went that was way for original...
Forum: 77-81 Firebird & Trans Am TECH 11-17-2023, 04:05 PM
Replies: 15
Views: 997
Posted By Skip Fix
The little rotary compressor in my 81 actually...

The little rotary compressor in my 81 actually works pretty decent and easier to change plugs than the A6 that was on the 78!
Forum: 77-81 Firebird & Trans Am TECH 11-17-2023, 09:51 AM
Replies: 15
Views: 997
Posted By bsblguy
I used the original air kit on a '78 and '79 and...

I used the original air kit on a '78 and '79 and it works very well. Evap, condenser, compressor, all hoses. Everything needed. I do not like their compressor mounting bracket so I bought a vintage...
Forum: 77-81 Firebird & Trans Am TECH 09-27-2023, 06:45 PM
Replies: 15
Views: 997
Posted By bhill86
Without rereading the stage 3 kit description, my...

Without rereading the stage 3 kit description, my stage 2 kit includes everything except the thermal switch if I remember correctly. (Different than the low pressure switch which is included). The...
Forum: 77-81 Firebird & Trans Am TECH 09-26-2023, 05:50 PM
Replies: 15
Views: 997
Posted By hgerhardt
And there's the problem. I said get a NEW one...

And there's the problem. I said get a NEW one from Alma Products, who own the original GM tooling. They are not cheap, however:...
Forum: 77-81 Firebird & Trans Am TECH 09-26-2023, 04:44 PM
Replies: 15
Views: 997
Posted By bhill86
I agree, my fan stays on high, likely max...

I agree, my fan stays on high, likely max (recirculate), almost indefinitely on hot days. I’ve read about n this forum of people using a different fan that blows more air but I don’t think I ever saw...
Forum: 77-81 Firebird & Trans Am TECH 09-26-2023, 04:17 PM
Replies: 15
Views: 997
Posted By ta6point6
I used original air as well and thought fit was...

I used original air as well and thought fit was good but the ac mounting bracket was not painted( as mentioned) so do that first. With the sanden compressor I did not need to add a idle speed motor...
Forum: 77-81 Firebird & Trans Am TECH 09-25-2023, 09:44 PM
Replies: 15
Views: 997
Posted By bhill86
Sorry, here…....

Sorry, here…. https://www.originalair.com/engine-compartment-gm

It’s under original air group which is a part of classic auto air.
Forum: 77-81 Firebird & Trans Am TECH 09-25-2023, 04:28 PM
Replies: 15
Views: 997
Posted By hgerhardt
Since the under-dash parts and evap are the most...

Since the under-dash parts and evap are the most complex sub-assembly of all, I'd use that and piece together the rest of the parts underhood.

To avoid the aftermarket, kludgy compressor/mount,...
Forum: 77-81 Firebird & Trans Am TECH 09-25-2023, 03:22 PM
Replies: 15
Views: 997
Posted By bhill86
I installed a Classic Auto Air system in my 77...

I installed a Classic Auto Air system in my 77 400 being in a similar situation as you. I was missing all components beyond the evaporator core but flushed mine, it had no holes and everything under...
Forum: 77-81 Firebird & Trans Am TECH 09-25-2023, 02:56 PM
Replies: 15
Views: 997
Posted By Scarebird
I was not impressed by the Vintage Air setup.

I was not impressed by the Vintage Air setup.
Forum: 77-81 Firebird & Trans Am TECH 09-05-2023, 08:52 AM
Replies: 54
Views: 3,852
Posted By Trevor78
Some of those studs were threaded into the...

Some of those studs were threaded into the plastic of the box but if you snapped it then along with the nut was probably half eaten away with corrosion at that location. If part remains you could...
Forum: 77-81 Firebird & Trans Am TECH 09-05-2023, 02:20 AM
Replies: 54
Views: 3,852
Posted By nUcLeArEnVoY
Which stud are you talking about? One of the two...

Which stud are you talking about? One of the two that are integrated/welded into the metal frame of the heater box, or the one that is clipped onto the outer edge and has the integrated ground strap?...
Forum: 77-81 Firebird & Trans Am TECH 06-29-2023, 03:07 PM
Replies: 12
Views: 733
Posted By bhill86
I found my old thread talking about the speakers...

I found my old thread talking about the speakers but it didn’t specify the brand. Sorry.

I’ve always intended on doing one of two things. Either cut a spare duct up to create a relief for the...
Forum: 77-81 Firebird & Trans Am TECH 06-28-2023, 11:40 PM
Replies: 54
Views: 3,852
Posted By Trevor78
Probably all engine types had their version of...

Probably all engine types had their version of the retrictor fitting in Firebirds since there was no heater tap valve. I was only just posting info and pics of the Olds version on another forum.
Forum: 77-81 Firebird & Trans Am TECH 06-28-2023, 04:30 PM
Replies: 54
Views: 3,852
Posted By nUcLeArEnVoY
I'm reassembling my heater box right now as well...

I'm reassembling my heater box right now as well due to an original heater core leak, I went with Ames' copper/brass repro and it seems to be a quality unit and held vacuum when I tested it.
...
Forum: 77-81 Firebird & Trans Am TECH 06-27-2023, 12:49 PM
Replies: 12
Views: 733
Posted By kingbuzzo
I have thought about this but my new car has AC...

I have thought about this but my new car has AC and there is no room in there for anything significant.

I also looked at those floor speaker boxes but not exactly a clean look.

I ended up just...
Forum: 77-81 Firebird & Trans Am TECH 06-27-2023, 12:26 PM
Replies: 54
Views: 3,852
Posted By Trevor78
I only added pages for what was being discussed....

I only added pages for what was being discussed. Yes, the case is right next to the exhaust, any gaps introduce more heat straight into the AC, and cabin, fumes, sound, ants...! Any gaps will allow...
Forum: 77-81 Firebird & Trans Am TECH 06-27-2023, 10:33 AM
Replies: 12
Views: 733
Posted By bhill86
Yea, I should’ve clarified I run my stock 77...

Yea, I should’ve clarified I run my stock 77 stereo and console 8 track through a Bluetooth enabled amp which drives the center speaker and 6x9s which are all 4 ohm. I did run a single DIN radio for...
Forum: 77-81 Firebird & Trans Am TECH 06-27-2023, 10:26 AM
Replies: 12
Views: 733
Posted By 78w72
Back in highschool and into my mid 20's on a 78...

Back in highschool and into my mid 20's on a 78 t/a i used 4.5" round speakers installed in the lower sides of the console before i cared about cutting stuff up or at least didnt want to cut the door...
Forum: 77-81 Firebird & Trans Am TECH 06-27-2023, 09:26 AM
Replies: 54
Views: 3,852
Posted By GoreMaker
Not shown in that diagram, the AC box in the...

Not shown in that diagram, the AC box in the engine bay uses that gooey butyl rope seal around the periphery that presses up against the firewall, and between the two halves of the box. There's a...
Forum: 77-81 Firebird & Trans Am TECH 06-27-2023, 09:21 AM
Replies: 54
Views: 3,852
Posted By Trevor78
Some more diagrams. ...

Some more diagrams.

https://live.staticflickr.com/65535/53005931458_2f93a27a6d_h.jpg (https://flic.kr/p/2oKXfHY)Firebird AC heater box ducting evaporator case assembly diagrams (1)...
Forum: 77-81 Firebird & Trans Am TECH 06-27-2023, 08:57 AM
Replies: 54
Views: 3,852
Posted By GoreMaker
I consider it an important part of the...

I consider it an important part of the installation. If it wasn't there before and you didn't mind, then I guess you can leave it that way. It significantly improves the performance of the heater,...
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