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Passenger Side Cowl Vent on '53 Chevy 3100
#1081758 Tue Jan 27 2015 05:03 AM
Joined: Oct 2014
Posts: 142
L
Shop Shark
So what is the story on the passenger side cowl vent on a '53 Chevy 3100?

The reason I ask is the one on my truck appears to be totally useless. There are the louvers on the outside body that allow air into the cavity between the inner and outer sheet metal. On the inside, there is what appears to be an original factory plate screwed over the opening in the inner panel.

Were there some trucks that had some kind of vent there?


'53 3100 5-window
'57 Mercury Monterey 2-Door Sedan
Tim H
Re: Passenger Side Cowl Vent on '53 Chevy 3100
lynngrove #1081761 Tue Jan 27 2015 05:07 AM
Joined: May 2001
Posts: 8,386
Extreme Gabster
The dealer installed fresh air heater bolted to where the cover plate is. With the recirculating heater and aftermarket heaters the cover stayed in place.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.
My TRUCKS website
Re: Passenger Side Cowl Vent on '53 Chevy 3100
lynngrove #1081918 Wed Jan 28 2015 02:40 AM
Joined: Oct 2008
Posts: 50
S
Wrench Fetcher
Didn't some AD years have a vent door that could be opened to let in fresh air? If there is such a thing I need one. I thought I saw one on some of these trucks before.

Re: Passenger Side Cowl Vent on '53 Chevy 3100
lynngrove #1081923 Wed Jan 28 2015 02:52 AM
Joined: May 2001
Posts: 8,386
Extreme Gabster
There was a vent door on the driver side from '47-50. It was eliminated when the vent windows were introduced.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.
My TRUCKS website
Re: Passenger Side Cowl Vent on '53 Chevy 3100
lynngrove #1081925 Wed Jan 28 2015 02:57 AM
Joined: Dec 2005
Posts: 2,587
B
Shop Shark
Are you talking about a Deluxe Airflow Heater ?
Deluxe Airflow


Tim


"A house is built with boards and beams,a home is built with love and dreams"

Look deep before you leep !!!

"Everything is Everything"

"If I say a mouse can pull a house,Hitch him up"

My 1951 3100 Chevrolet
My 1951 Chevrolet Suburban Carryall

Re: Passenger Side Cowl Vent on '53 Chevy 3100
lynngrove #1081932 Wed Jan 28 2015 03:29 AM
Joined: Mar 2010
Posts: 9,142
5
Master Gabster
What years were the Deluxe Airflow heater available?
Carl

Re: Passenger Side Cowl Vent on '53 Chevy 3100
lynngrove #1081956 Wed Jan 28 2015 04:45 AM
Joined: Sep 2001
Posts: 29,843
ace skiver
A somewhat similar in appearance Airflow (Air Flow) or Fresh-Air Heater was available as a GM Accessory from 1947-1955 (A-D years). They all used outside air from that that lower right cowl opening.

In 1953-55, the cable controlled inside/outside air and from 47-52 the cable controlled the defroster flap.

GM's use of the terms Air Flow and Fresh Air over 47-55 is confusing and not consistent with changes made in 1953.


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
Z-series (54/55) GMC 350 (2-ton) COE [1954advance-design.com] - now part of Dave's family
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engine are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
Re: Passenger Side Cowl Vent on '53 Chevy 3100
lynngrove #1082187 Thu Jan 29 2015 04:17 AM
Joined: Mar 2010
Posts: 9,142
5
Master Gabster
Thanks Tim.
Carl

Re: Passenger Side Cowl Vent on '53 Chevy 3100
stoveboltgator #1082258 Thu Jan 29 2015 03:13 PM
Joined: Mar 2008
Posts: 4,289
J
Shop Shark
Originally Posted by stoveboltgator
Didn't some AD years have a vent door that could be opened to let in fresh air? If there is such a thing I need one. I thought I saw one on some of these trucks before.


I have seen passenger (RH) side opening 'crotch cooler' vents on RH Drive trucks such as Australian and South African models,although Cletis is correct about the American/Canadian spec trucks.

Last edited by jockbolter50; Thu Jan 29 2015 03:15 PM.

I've definately got this truck thing in my blood ... my DNA sequence has torque settings

"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.

1950 Chevy Advance Design 3100 in Scotland
In the Stovebolt Gallery
More pix on Flickr .
Re: Passenger Side Cowl Vent on '53 Chevy 3100
lynngrove #1082318 Thu Jan 29 2015 08:12 PM
Joined: Oct 2014
Posts: 142
L
Shop Shark
Thank You to all who replied. The answers confirmed my thought that as far as I am concerned, on my truck, the passenger side cowl vent is useless.

The instructions for the AC/Heat unit I am going to install says to close off the vent and recommends putting insulation in the cavity between the outer and inner sheet metal.

My thought was to weld and seal a piece of sheet metal on the inside of the louvers, leaving them on the outside for a stock appearance.

My wife, on the other hand, says I should cut out the louvers and weld in a smooth piece of sheet metal. She says, "there are no louvers on the driver's side".

I am going to weld the upper cowl vent shut and seal it because over the years it has been a source of water under the dash and down the inside of the firewall. My thinking on closing off the louvers (either method mentioned above) is the same, seal off potential sources of water.

Thoughts?


'53 3100 5-window
'57 Mercury Monterey 2-Door Sedan
Tim H
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