Best air flow in non AC trucks tricks - The 1947 - Present Chevrolet & GMC Truck Message Board Network

truckin 79 · 07-26-2022, 04:32 PM

I am still working on getting my AC sorted out in the 79, so no AC yet. I went to the junkyard the other day and almost died of heat stroke, it was so hot in the afternoon and I did not bring any water. Anyway jump in the truck after paying for my junk after downing a bottle water from the vending machine. Anyway does anyone have a secret combo to max airflow in truck cab without AC? I usually open side vent windows, bottom vent doors and rear slider but that makes a lot of wind noise. I have also opened all the windows, vents, rear slider and bottom vents but air does not directly flow towards me. I think my best combo so far is passenger vent window, rear slider halfway open and the drivers window down about 6". The passenger side vent window seems to create a strong vortex of air.......well hot air but still air right at me.

Loco83 · 07-26-2022, 06:37 PM

The ultimate solution.

**mongocanfly** · 07-26-2022, 08:09 PM

i have no rear slider, but most times its just both windows rolled down and the vent windows cracked ,,not fully open...a gigantic junebug taught me that lesson one day..
ricocheted off the vent and knocked me in the head

Bandit130 · 07-26-2022, 10:43 PM

In Texas, there is no best airflow other than AC with 100 plus temps. It is hot as hell without it!!!

kipps · 07-27-2022, 12:36 AM

The doors do come off on these trucks. In most areas, there's no legal requirement to have doors installed.

Dead Parrot · 07-27-2022, 09:54 AM

No magic combo. The AC in mine is barely operational due to leaks in the 20+ year old hoses and compressor. Current thought is some variation of a Sanden compressor and convert to R134.

You want to be among the folks that open the salvage yard in the morning. You have a couple of hours before baking time starts. Wide brim hat and white shirt help.

I don't have a rear slider but as you have found, a partially open door window seems to flow more air to you. A cold drink helps if you have a safe way to carry one as does a large towel to wipe off sweat.

LT7A · 07-28-2022, 06:01 AM

IIRC, you can spin the vent window around til it's pointing at you. Hard to get more air flow than when it's out there catching the wind and funneling it in to you. Funny though, haven't done that in a long time.

07-26-2022, 04:32 PM	#1
truckin 79 Registered User Join Date: Jun 2014 Location: CO Posts: 750	Best air flow in non AC trucks tricks I am still working on getting my AC sorted out in the 79, so no AC yet. I went to the junkyard the other day and almost died of heat stroke, it was so hot in the afternoon and I did not bring any water. Anyway jump in the truck after paying for my junk after downing a bottle water from the vending machine. Anyway does anyone have a secret combo to max airflow in truck cab without AC? I usually open side vent windows, bottom vent doors and rear slider but that makes a lot of wind noise. I have also opened all the windows, vents, rear slider and bottom vents but air does not directly flow towards me. I think my best combo so far is passenger vent window, rear slider halfway open and the drivers window down about 6". The passenger side vent window seems to create a strong vortex of air.......well hot air but still air right at me. __________________ 79 Chevy 2wd BIG10 350 TH400

07-26-2022, 06:37 PM	#2
Loco83 Registered User Join Date: Nov 2018 Location: Cali Posts: 322	Re: Best air flow in non AC trucks tricks The ultimate solution. Attached Images

07-26-2022, 08:09 PM	#3
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,674	Re: Best air flow in non AC trucks tricks i have no rear slider, but most times its just both windows rolled down and the vent windows cracked ,,not fully open...a gigantic junebug taught me that lesson one day.. ricocheted off the vent and knocked me in the head __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver

07-26-2022, 10:43 PM	#4
Bandit130 Registered User Join Date: Dec 2014 Location: Euless, Texas Posts: 520	Re: Best air flow in non AC trucks tricks In Texas, there is no best airflow other than AC with 100 plus temps. It is hot as hell without it!!! __________________ 1974 Cheyenne 10 LWB Stock 350 W/HEI /TH350/AC/4 BBL Quadrajet Mopar by Birth Chevy by Choice

07-27-2022, 12:36 AM	#5
kipps Registered User Join Date: Jul 2014 Location: North-central Virginia Posts: 1,104	Re: Best air flow in non AC trucks tricks The doors do come off on these trucks. In most areas, there's no legal requirement to have doors installed. __________________ 1987 C6P V20 truck, 2010 LMG 5.3, AFM delete, 2010 Camaro exhaust manifolds, 1997 nv4500, 1991 np241c, hydroboost, 2005 14bff axle & driveshaft, drop-n-lock gooseneck, 4.10 gears, stock suspension, rims, and tires. Still a work in progress. Any questions or suggestions are welcome!

07-27-2022, 09:54 AM	#6
Dead Parrot Registered User Join Date: Aug 2012 Location: Oklahoma City, OK Posts: 2,620	Re: Best air flow in non AC trucks tricks No magic combo. The AC in mine is barely operational due to leaks in the 20+ year old hoses and compressor. Current thought is some variation of a Sanden compressor and convert to R134. You want to be among the folks that open the salvage yard in the morning. You have a couple of hours before baking time starts. Wide brim hat and white shirt help. I don't have a rear slider but as you have found, a partially open door window seems to flow more air to you. A cold drink helps if you have a safe way to carry one as does a large towel to wipe off sweat.

07-28-2022, 06:01 AM	#7
LT7A Registered User Join Date: Oct 2015 Location: PNW Posts: 3,627	Re: Best air flow in non AC trucks tricks IIRC, you can spin the vent window around til it's pointing at you. Hard to get more air flow than when it's out there catching the wind and funneling it in to you. Funny though, haven't done that in a long time.



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