The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevy/GMC Suburbans & Panels Message Board > 1967 - 1972 Chevy/GMC Suburbans and PanelsProjects and Builds

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 10-12-2021, 06:35 PM   #1
72 DIRTY RAT
Registered User
 
72 DIRTY RAT's Avatar
 
Join Date: Nov 2009
Location: Sydney, Australia
Posts: 49
72 Suburban rear A/C unit

Hi Guys, I need opinions!
My 72 A/C is all original. The fans work front and back, but the back fans are way to noisy! It needs some minor other work to get operational but I am thinking of getting rid of the rear unit (it’s so bulky) and buying/retrofitting a whole new updated A/C system. That means front air only!
The question is whilst the new systems are great, would they cool the whole cabin?
__________________
*1972 454ci Burb, C20 3/4T, T700, 2WD
*1969 540ci Vette, 540ci Aluminum BB,755 BHP & 734 LbFt torque, No NOS, No Forced induction! Just BIG CUBES
72 DIRTY RAT is offline   Reply With Quote
Old 10-13-2021, 12:45 AM   #2
BAD1916
Registered User
 
Join Date: Oct 2012
Location: VENTURA COUNTY CALIFORNIA
Posts: 268
Re: 72 Suburban rear A/C unit

I don’t have experience with a front only setup so I can’t comment on that. However, if your truck has been insulated well I would think that it would cool well.Hopefully others will chime in with real world info.
BAD1916 is offline   Reply With Quote
Old 10-13-2021, 04:37 AM   #3
72 DIRTY RAT
Registered User
 
72 DIRTY RAT's Avatar
 
Join Date: Nov 2009
Location: Sydney, Australia
Posts: 49
Re: 72 Suburban rear A/C unit

I have put new insulation everywhere, plus I very rarely use the back seats.
__________________
*1972 454ci Burb, C20 3/4T, T700, 2WD
*1969 540ci Vette, 540ci Aluminum BB,755 BHP & 734 LbFt torque, No NOS, No Forced induction! Just BIG CUBES
72 DIRTY RAT is offline   Reply With Quote
Old 10-28-2021, 07:31 AM   #4
BigBird05
Registered User
 
Join Date: Aug 2019
Location: Cheraw
Posts: 1,304
Re: 72 Suburban rear A/C unit

72 Dirty Rat, is your A/C unit roof mounted? I have a floor mounted unit listed in the for sale section with a picture. I don't know if the fans are the same or not.
BigBird05 is offline   Reply With Quote
Old 10-28-2021, 12:18 PM   #5
FLYNAVY30
Registered User
 
Join Date: Apr 2013
Location: Austin, TX
Posts: 592
Re: 72 Suburban rear A/C unit

I have an original front and rear A/C set up, although it was not operable when I purchased my truck. I replaced the front unit with a vintage air set up. I can assure you, it will not cool the entire truck. Its comfortable in the summer with the air blowing on you in the front, but the middle and rear does not get comfortable. Just too much glass and too much space. At some point I will attempt to either integrate the factory rear A/C with the vintage air, or replace it with a second vintage air system.
__________________
1972 C20 Suburban
1964 Corvette Coupe
1997 Lexus LX450
FLYNAVY30 is offline   Reply With Quote
Old 11-22-2021, 03:02 PM   #6
19Suburban69
Registered User
 
Join Date: Nov 2018
Location: Applegate, Ca 95703
Posts: 53
Re: 72 Suburban rear A/C unit

I've got dual vintage air on my '69 C20. Recently did LS swap and used stock compressor. works just fine. Winter I use rear heat because I don't like front vents blowing in my face with heater.
__________________
1955 Chevy, 2 dr post, my first car

1969 Chevy C20 Suburban, 6.0 LS w/4L80

2001 Silverado Z71, 5.3 extended cab
19Suburban69 is offline   Reply With Quote
Old 12-18-2021, 12:54 AM   #7
72 DIRTY RAT
Registered User
 
72 DIRTY RAT's Avatar
 
Join Date: Nov 2009
Location: Sydney, Australia
Posts: 49
Re: 72 Suburban rear A/C unit

Thank you for all the replies! I ended up just pulling the rear system out, I will eventually get vintage air for the front, I really only need the front air anyways!👍👍
__________________
*1972 454ci Burb, C20 3/4T, T700, 2WD
*1969 540ci Vette, 540ci Aluminum BB,755 BHP & 734 LbFt torque, No NOS, No Forced induction! Just BIG CUBES
72 DIRTY RAT is offline   Reply With Quote
Old 12-18-2021, 09:39 AM   #8
FLYNAVY30
Registered User
 
Join Date: Apr 2013
Location: Austin, TX
Posts: 592
Re: 72 Suburban rear A/C unit

Quote:
Originally Posted by 19Suburban69 View Post
I've got dual vintage air on my '69 C20. Recently did LS swap and used stock compressor. works just fine. Winter I use rear heat because I don't like front vents blowing in my face with heater.
Any chance you could give us some additional info on where/how you mounted the second vintage A/C unit and how the plumbing works?

Thanks!
__________________
1972 C20 Suburban
1964 Corvette Coupe
1997 Lexus LX450
FLYNAVY30 is offline   Reply With Quote
Old 01-28-2022, 12:09 AM   #9
WannaBe68
Registered User
 
WannaBe68's Avatar
 
Join Date: Jun 2016
Location: Texas!
Posts: 430
Re: 72 Suburban rear A/C unit

At least here in Texas - the 2nd and 3rd rows can become pretty warm for the boys. But my wife and I are comfortable with the front only Vintage air system :-)
I do, however, have a complete rear system that I plan to install this year some time to give them a break during our summer road trips.
WannaBe68 is offline   Reply With Quote
Old 01-28-2022, 01:45 AM   #10
19Suburban69
Registered User
 
Join Date: Nov 2018
Location: Applegate, Ca 95703
Posts: 53
Re: 72 Suburban rear A/C unit

Quote:
Originally Posted by FLYNAVY30 View Post
Any chance you could give us some additional info on where/how you mounted the second vintage A/C unit and how the plumbing works?

Thanks!
Previous owner bolted generic vintage air blower unit to roof then built box around it. Freon and wiring run down right rear corner thru floor and along frame to front.
__________________
1955 Chevy, 2 dr post, my first car

1969 Chevy C20 Suburban, 6.0 LS w/4L80

2001 Silverado Z71, 5.3 extended cab
19Suburban69 is offline   Reply With Quote
Old 01-28-2022, 10:45 AM   #11
polishspy
Registered User
 
Join Date: Mar 2017
Location: Texas
Posts: 47
Re: 72 Suburban rear A/C unit

Quote:
Originally Posted by FLYNAVY30 View Post
Any chance you could give us some additional info on where/how you mounted the second vintage A/C unit and how the plumbing works?

Thanks!
So this is what i had put together to run an under dash front unit and s small unit under the front seats. The plumbing has two selenoids to feed each of the units and 2 set of dryers.
vintage air part numbers - 751170 (evaporator), 521171 (hoses), 021567 (condenser), 110061 (fittings for compressor)
Monster condenser, PN 037030-OVR
Sanden 709, PN 04709-VMA
polishspy is offline   Reply With Quote
Reply

Bookmarks

Tags
a/c, airconditioning

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 01:57 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com