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#1 |
Registered User
![]() Join Date: Mar 2005
Location: Jurupa Valley, Ca
Posts: 1,210
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Center AC Vent Mod
I finally got everything hooked up and working, except the AC itself. I did the center vent mod which only uses 1 inlet hose. Not really working out. It blows a good amount of air to the driver, but none to the passenger. Side vents work as expected.
Guess next time I take the dash apart, I'll put the dual feed housing back in.
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Terry 1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC |
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#2 |
Registered User
Join Date: Oct 2006
Location: Orland Park Il
Posts: 2,041
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Re: Center AC Vent Mod
Thanks for the info, I'm putting together a collection of AC parts and will keep this in mind.
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68 GMC C3500 Longhorn DRW 67 Chevy C10 LWB 90 Mustang Gt 90 Mustang Notchback |
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#3 |
Registered User
Join Date: Oct 2010
Location: Ocean Springs, MS
Posts: 1,746
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Re: Center AC Vent Mod
I did mine that way too, didn't bother me too much since nobody sits in the middle.
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Gary 1971 Chevrolet C/10 1951 GMC 100 1977 GMC C15 1955 Chevrolet 3100 |
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#4 |
Registered User
Join Date: Nov 2014
Location: Bigfork, Montana
Posts: 1,137
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Re: Center AC Vent Mod
I'm mulling over the same thing, I'm an A/C hog, I always turn the vents toward me (selfish huh!) So I'm thinking this might work out in my favor?
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#5 |
Registered User
Join Date: Oct 2010
Location: Ocean Springs, MS
Posts: 1,746
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Re: Center AC Vent Mod
It greatly improves the airflow to the driver, nice when it's really hot in the summer. I just did it that way to simplify the air hoses in the dash, but it does have a side effect.
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Gary 1971 Chevrolet C/10 1951 GMC 100 1977 GMC C15 1955 Chevrolet 3100 |
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#6 |
Registered User
![]() Join Date: Mar 2005
Location: Jurupa Valley, Ca
Posts: 1,210
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Re: Center AC Vent Mod
I plan on getting my AC working prior to summer. If I want my wife to ride as passenger I must do all I can to keep her cool. So, I'm going back to the original setup. You know what they say... Happy wife, happy life!
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Terry 1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC |
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#7 |
Senior Member
![]() Join Date: May 2012
Location: Scottsdale, AZ
Posts: 1,906
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Re: Center AC Vent Mod
I did the mod because of limited space behind and around the original AM radio. I hated the Mod. I installed a retro sound. Now there is enough room behind my dash to park a bus! I re-plumbed center vent to blow out evenly, much better that way. But, hose wrestling around the stock radio is no fun either.
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White K20 |
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#8 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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As long as cold air is blowing out the center vent who cares! It blows straight out no matter how it's ran!
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#9 | |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,005
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Re: Center AC Vent Mod
Quote:
![]() Like Andy said, cold air is cold air. If the AC works that's all that matters, the cab will stay cool no matter how the air is directed.
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1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man |
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#10 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Center vent.
Outside temperature!
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#11 |
Senior Member
![]() Join Date: May 2012
Location: Scottsdale, AZ
Posts: 1,906
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Re: Center AC Vent Mod
This is not correct.
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White K20 |
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#12 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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So your saying it doesn't come straight out? Mine sure does. The air comes into the center vent from the side one are the other and hits the other side then comes straight out the vent looking at you.
But I really don't see how it's not enough cooling to begin with when you haven't changed the capacity of the unit. All you have done is restricted the flow. ![]()
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#13 |
Registered User
![]() Join Date: May 2013
Location: WEST PALM FLORIDA
Posts: 1,174
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Re: Center AC Vent Mod
If you dont smoke just put it where the ash tray is , Im sure someone has done this on a retro ac install
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68 Long Fleet , ly6 , turbo 350 , 3-5 drop , original paint , front discs 67 Small window , 7 foot bed , tweaked 6.0 LSX 2004R Medium Olive 58 Apache fleet , 235 , offy intake , dual exhaust , 4 on the floor , red/white 69 Long Fleet , Custom , 6.0, 4l60 , AC , Medium Olive |
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#14 | |
Senior Member
![]() Join Date: May 2012
Location: Scottsdale, AZ
Posts: 1,906
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Re: Center AC Vent Mod
Quote:
If you do the mod of the OP, which is the mod I did. Plugging one hole and using one hose, then the air flows in the direction the single hose is pointing. It's a dysfunctional mod. I did not like it. I agree, do you get enough cooling in the cab after a bit of time running, but the passenger gets no air from the center if you only hook up the right hand hose, which is the easier hose to keep hooked. Right had hose only, then, the passenger gets no air from the center. And if that passenger is your wife on a hot day..... then you move toward reversing the mod! ![]()
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White K20 |
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#15 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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I've had this mod for several years at least 10 and have never had any problems with it. My wife rides with me a lot and has never complained about being hot. Temp wise anyway!
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#16 | |
Senior Member
![]() Join Date: May 2012
Location: Scottsdale, AZ
Posts: 1,906
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Re: Center AC Vent Mod
Quote:
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White K20 |
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#17 |
Registered User
Join Date: Feb 2003
Location: Santa Ana, CA
Posts: 2,191
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Re: Center AC Vent Mod
I run Vintage Air with my stock center vent with the single hose set-up with the driver side inlet plugged. As mentioned, all flow is directed to the driver. However, I seem to recall that someone was making modified plastic ducting for the center vent with a single hose inlet to fix this issue. I think it might even be Vintage Air.
After some research, I found that it was Brother Truck that has them. https://www.brotherstrucks.com/67-72...tinfo/CVUG072/ Its still a side inlet, but it looks like the plenum is contoured with a 90 degree bend to push the air straight out the vent. Last edited by cleszkie; 01-09-2017 at 02:31 PM. Reason: more info |
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#18 |
Registered User
![]() Join Date: Jul 2012
Location: Raleigh
Posts: 98
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Re: Center AC Vent Mod
This is what I am going to use,came from restomod air. My inside unit(also restomod air)has 2 outlets for center vent but I will be blocking one off.
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#19 | |
Registered User
Join Date: Aug 2013
Location: Kentucky
Posts: 550
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Re: Center AC Vent Mod
Quote:
I also see brother has this one https://www.holley.com/products/ac_a.../parts/CVUG072 does it help? On my vintage air kit. You block off one side of the inlet (driver side). But on mine all the air is directed to the passenger side.
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1961 Biscayne http://67-72chevytrucks.com/vboard/s...90#post6978790 SOLD 1971 C-10 http://67-72chevytrucks.com/vboard/s...d.php?t=656258SOLD 1966 Suburban http://67-72chevytrucks.com/vboard/s...85#post7323885 |
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#20 |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,248
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Re: Center AC Vent Mod
Onboard with this. RH hose a big PITA, and a mess with the wiring. So I got plugs from LMC for the original parts. Ensured they were sealed tight and right (won't out of the box, easy fix). Clean, and the AC is wonderful.
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Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
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#21 |
Senior Member
![]() Join Date: Dec 1999
Location: Southern California
Posts: 2,811
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Re: Center AC Vent Mod
This piece here https://classicparts.com/chevy-gmc/t...or-center-vent will control the air flow a bit better than plugging off one side of stock ducting manifold. It also provides even more room in that area.
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Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746 |
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