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cab corners, inner & outer #1337315 Wed Dec 11 2019 09:10 PM
Joined: Aug 2018
Posts: 166
M
Mike Burns Offline OP
Shop Shark
I'm finally getting back to my 1953 half ton cab. My inner cab corners came with a large hole in each, probably 3/4 to 1 inch. Can somebody tell me what the hole is for? Also, I'm curious about fitment It appears that the inner corner installs on the bottom of the rear floor metal, inside of the lip.Correct? Does the bottom of the outer cab corner weld to, or otherwise seal to the bottom of the inner corner? My inners are not even there to look at, thus my questions.

Re: cab corners, inner & outer [Re: Mike Burns] #1337316 Wed Dec 11 2019 09:19 PM
Joined: May 2015
Posts: 1,787
K
klhansen Offline
Shop Shark
The hole originally had a rubber plug in it. My truck had one plug left. No idea what the holes were originally for, though.
Yes, the inners fit inboard of the lip on the floor pan, and the outer corner is welded to the bottom of the inner. Originally spot welded, with possibly some seam sealer. There was also a small gap for drainage at the seam that I saw on my originals before they came off. I may have a picture of that area somewhere.

Last edited by klhansen; Wed Dec 11 2019 09:20 PM.

Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos
Busting rust since the mid-60's
Re: cab corners, inner & outer [Re: Mike Burns] #1337320 Wed Dec 11 2019 09:50 PM
Joined: Sep 2006
Posts: 3,603
B
Brad Allen Offline
Shop Shark
Attached is a slide set that actually shows the corners as part of cab ventilation. The corners had a small louver vent that is shown as part of the flow. The plug should be replaced to keep critters, mud and moisture out.
https://www.flickr.com/photos/advance-design_parts_co/albums/72157649468726416

Last edited by Brad Allen; Wed Dec 11 2019 10:03 PM.
Re: cab corners, inner & outer [Re: Mike Burns] #1337326 Wed Dec 11 2019 10:59 PM
Joined: May 2015
Posts: 1,787
K
klhansen Offline
Shop Shark
That filmstrip didn't show the little louver like opening in the outer to inner cab corner joint, but it's there. I don't recall if its pointed toward the back of the truck, but that would be the best way. If it were pointed forward, it would act as a scoop.


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos
Busting rust since the mid-60's
Re: cab corners, inner & outer [Re: Mike Burns] #1337335 Thu Dec 12 2019 12:54 AM
Joined: Sep 2001
Posts: 29,290
tclederman Online
Boltergeist
Those "weep holes" in the bottom rear on both sides of the cab are for "air flow" - for a "cab that breathes". The movement of the truck/cab causes outside air to pull out the inside air (via the *Bernoulli's principle").

The "cab that breathes" was the sales pitch, I recall. I will be surprised if someone finds GM documentation for GM plugs for those holes (plugs that woulds stop the air flow shown in Brads's image").


Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic - part of the family for 15 years
Z-series (54/55) GMC 350 (2-ton) COE - 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.
Re: cab corners, inner & outer [Re: Mike Burns] #1337340 Thu Dec 12 2019 01:36 AM
Joined: May 2015
Posts: 1,787
K
klhansen Offline
Shop Shark
Two different holes, Tim.
There are round holes (I'm guessing around 1" in diameter) in the inner cab corner that face toward the front of the truck. If they were left open, they could allow road dirt/moisture into the cab corners. The little gap/louver in the joint at the very bottom let moisture drain out (except when the get plugged with dust/dirt and probably contribute to the typical cab corner rust.) On my truck, I recall that they were actually stamped into the outer cab corner and the opening was pointed toward the rear so they didn't scoop in as much dirt and moisture going down the road. I'll have to see if I have a picture of them (my cab corners are currently cut off pending patching). They were small enough that they didn't contribute much to airflow thru the cab as Brad's slideshow indicated.

Last edited by klhansen; Thu Dec 12 2019 01:37 AM.

Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos
Busting rust since the mid-60's
Re: cab corners, inner & outer [Re: Mike Burns] #1337342 Thu Dec 12 2019 02:01 AM
Joined: Sep 2001
Posts: 29,290
tclederman Online
Boltergeist
Thanks, Kevin,

Are those holes on my 1954 pickup cab?
I’ll try to remember to look tomorrow.

Brad’s photos showed the location of the holes I am referring-to.

Is there a photo of the holes you are referring-to shown in Brad’s photos?
Sorry about being so slow/dense in understanding what is being discussed?


Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic - part of the family for 15 years
Z-series (54/55) GMC 350 (2-ton) COE - 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.
Re: cab corners, inner & outer [Re: Mike Burns] #1337352 Thu Dec 12 2019 03:09 AM
Joined: May 2015
Posts: 1,787
K
klhansen Offline
Shop Shark
I just looked for a photo of the little louver hole that I was referring to, but that's one thing I didn't record before cuttting the cab corners off. The repop outer cab corner patches don't have it, but do have about a 5/16" diameter drain hole at the lowest spot closest to the B pillar. I'll bet your '54 will have the mini-louvers if the corners are original.

Last edited by klhansen; Thu Dec 12 2019 03:09 AM.

Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos
Busting rust since the mid-60's
Re: cab corners, inner & outer [Re: Mike Burns] #1337362 Thu Dec 12 2019 04:36 AM
Joined: Sep 2006
Posts: 3,603
B
Brad Allen Offline
Shop Shark

Re: cab corners, inner & outer [Re: Mike Burns] #1337377 Thu Dec 12 2019 11:41 AM
Joined: Sep 2001
Posts: 29,290
tclederman Online
Boltergeist
Thanks, Brad

I am now properly adjusted/oriented.


Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic - part of the family for 15 years
Z-series (54/55) GMC 350 (2-ton) COE - 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.

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