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 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 10-18-2011, 01:30 PM   #1
67gmcstepside
Registered User
 
Join Date: Jan 2010
Location: jackson
Posts: 676
Cowl water drainage holes - where are they

I washed the truck today and water was pouring out of the kick panel vents. It's been parked under a pine tree with the cowl off and it looks like the drainage holes are clogged by pine needles. Where are the holes that drain the water to the bottom of the fender. I was just about to install the new carpet but now with this new challenge that we have to wait. Any information would be appreciated, thanks.
don
Posted via Mobile Device
67gmcstepside is offline   Reply With Quote
Old 10-18-2011, 01:51 PM   #2
steinepstein
Senior Member
 
Join Date: Nov 2003
Location: Chicago, IL
Posts: 365
Re: Cowl water drainage holes - where are they

They are located directly below the kick panel vents. I'd remove that vent and stick your hand in there and see if you can remove stuff by hand and the rest blow it out with an air gun.

Jon
__________________
Project Burro Viejo: http://67-72chevytrucks.com/vboard/s....php?p=3778216
steinepstein is offline   Reply With Quote
Old 10-18-2011, 06:51 PM   #3
67gmcstepside
Registered User
 
Join Date: Jan 2010
Location: jackson
Posts: 676
Re: Cowl water drainage holes - where are they

Thanks Jon, the PO must of done some patching because I don't feel any holes below the air vent. Maybe I need to drill some. I'll play with it this weekend. Thanks again
Posted via Mobile Device
67gmcstepside is offline   Reply With Quote
Old 10-18-2011, 08:23 PM   #4
steinepstein
Senior Member
 
Join Date: Nov 2003
Location: Chicago, IL
Posts: 365
Re: Cowl water drainage holes - where are they

It's not really a hole, it is more of an open seam between the cowl sheetmetal and the cab sheetmetal, it's quite large, you would notice it. That would be weird if it was filled in, I could see how you could have a lot of water draining into the cab if that were the case. Good luck.
__________________
Project Burro Viejo: http://67-72chevytrucks.com/vboard/s....php?p=3778216
steinepstein is offline   Reply With Quote
Old 10-19-2011, 06:32 AM   #5
67gmcstepside
Registered User
 
Join Date: Jan 2010
Location: jackson
Posts: 676
Re: Cowl water drainage holes - where are they

So this open seam should be right under the air vent? If you stick your hand through the vent your fingers should feel tis opening?
Thank you very much as I think I know what needs to be done.
Posted via Mobile Device
67gmcstepside is offline   Reply With Quote
Old 10-19-2011, 09:07 AM   #6
steinepstein
Senior Member
 
Join Date: Nov 2003
Location: Chicago, IL
Posts: 365
Re: Cowl water drainage holes - where are they

I'll get you a picture and upload it tonight.

I feel like you could get your hand in the vent hole and find the gap.
__________________
Project Burro Viejo: http://67-72chevytrucks.com/vboard/s....php?p=3778216
steinepstein is offline   Reply With Quote
Old 10-19-2011, 10:41 AM   #7
67gmcstepside
Registered User
 
Join Date: Jan 2010
Location: jackson
Posts: 676
Re: Cowl water drainage holes - where are they

thank you very much. A pic will go a long way. Last night in the dark I felt around inside the vent hole and it felt like ther PO patched the area with roof cement. I probally will have to dig it out.
67gmcstepside is offline   Reply With Quote
Old 10-19-2011, 11:08 AM   #8
Andy4639
Old member
 
Andy4639's Avatar
 
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,479
Wink Re: Cowl water drainage holes - where are they

If you jack the side of the truck up and look under the fender you will see the gap where all the water runs out at. You shouldn't have any problem finding it at all if it's closed up as you say then yea the water will spill over to the cab.
__________________
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.
Andy4639 is online now   Reply With Quote
Old 10-19-2011, 11:17 AM   #9
mpotts64
Registered User
 
mpotts64's Avatar
 
Join Date: Mar 2011
Location: Texarkana, AR
Posts: 123
Re: Cowl water drainage holes - where are they

I put a 12" metal blade on a sawzall and reached in through the door and cut the whole bottom out of that box, now, leaves, pinestraw, etc fall right on through, no holding water and it works well
__________________
No one ever fell to the top of a mountain.

When asked why I work on old trucks, I tell them: Been married 27 years, sons are pretty much gone, don't like the wife anymore and don't have a girlfriend, so, gotta do something, the old trucks are cheaper and less drama than a girlfriend -
mpotts64 is offline   Reply With Quote
Old 10-19-2011, 01:10 PM   #10
treveiger
Senior Member
 
treveiger's Avatar
 
Join Date: Jul 2010
Location: South Dakota
Posts: 4,076
Re: Cowl water drainage holes - where are they

Quote:
Originally Posted by mpotts64 View Post
I put a 12" metal blade on a sawzall and reached in through the door and cut the whole bottom out of that box, now, leaves, pinestraw, etc fall right on through, no holding water and it works well
I'm trying to picture it, do you have any pics?
Posted via Mobile Device
__________________
1969 Chevy c20(Miss Hackjob)
treveiger is offline   Reply With Quote
Old 10-19-2011, 01:14 PM   #11
mpotts64
Registered User
 
mpotts64's Avatar
 
Join Date: Mar 2011
Location: Texarkana, AR
Posts: 123
Re: Cowl water drainage holes - where are they

I have not taken pics of it but I can, it was not hard at all to do, just open the door and go in the opening between the fender and door post of the cab, between the hinges, start close to the side and cut up and out until you run out of metal, when you open the door and look in, you can see the box, just don't cut the side out of the cab,

now, I must say, I do not know about the all the factory a/c setups on these trucks, but I think I heard someone say the side panel vent is actually a recirculation vent for the factory a/c, maybe someone can confirm this, if so, you probably do not want to cut that box
__________________
No one ever fell to the top of a mountain.

When asked why I work on old trucks, I tell them: Been married 27 years, sons are pretty much gone, don't like the wife anymore and don't have a girlfriend, so, gotta do something, the old trucks are cheaper and less drama than a girlfriend -
mpotts64 is offline   Reply With Quote
Old 10-19-2011, 01:28 PM   #12
dfwright
Registered User
 
dfwright's Avatar
 
Join Date: Jan 2009
Location: San Antonio, Texas
Posts: 1,372
Re: Cowl water drainage holes - where are they

Here's a picture of mine I took while I was repairing rust. You can see the drain hole in the back corner. Ignore the giant rectangular hole, as I was cutting out rusted metal there --- but you can see the triangular drain hole in the corner.
Attached Images
 
__________________
1972 C10 LWB, 350/350

Deconstruction began 5/2009, mostly completed restoration, 5/2017
dfwright is offline   Reply With Quote
Old 10-19-2011, 01:32 PM   #13
67gmcstepside
Registered User
 
Join Date: Jan 2010
Location: jackson
Posts: 676
Re: Cowl water drainage holes - where are they

Guys, this is great!!! I now know exactly what I have to clear to get the water to run out instead of in the cab. I apprecate all these responses!!!

Last edited by 67gmcstepside; 10-19-2011 at 01:45 PM.
67gmcstepside is offline   Reply With Quote
Old 10-19-2011, 01:36 PM   #14
dfwright
Registered User
 
dfwright's Avatar
 
Join Date: Jan 2009
Location: San Antonio, Texas
Posts: 1,372
Re: Cowl water drainage holes - where are they

Yes, that is the drivers side in the photo
__________________
1972 C10 LWB, 350/350

Deconstruction began 5/2009, mostly completed restoration, 5/2017
dfwright is offline   Reply With Quote
Old 10-19-2011, 01:37 PM   #15
71blazerdetroit
Registered User
 
Join Date: Oct 2010
Location: detroit, mi
Posts: 67
Re: Cowl water drainage holes - where are they

Yes that's driver side.
__________________
71 Blazer, 350/700r4/241 1 tons dana 60 14 bolt 5.13's locked
71blazerdetroit is offline   Reply With Quote
Old 10-19-2011, 03:27 PM   #16
PanelDeland
I am a Referee of life.
 
PanelDeland's Avatar
 
Join Date: Jun 2000
Location: Greensboro N.C.
Posts: 13,980
Re: Cowl water drainage holes - where are they

When you get ready to reinstall the cowl,put a screen under it.Some make one from HD stuff or most vendors will carry them.It will help keep the crap out so it doesn't clog those drains.
__________________
The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion.
You can't fix stupid,not even with duct tape.
"My appearance is due to the fact that "GOD" does punish you for having too much fun!"
Barrett-Jackson has perfected alchemy,they make rust into gold!
"You can lead a horse to water but you can't saddle a duck"
"Cleverly disguised as a 'Responsible Adult'
"Sometimes your Knight in shining armor is just a retard in tinfoil"
PanelDeland is offline   Reply With Quote
Old 10-19-2011, 03:43 PM   #17
RenoKeene
Florida Edition
 
RenoKeene's Avatar
 
Join Date: Oct 2010
Location: Fruitland Park, FL
Posts: 3,898
Re: Cowl water drainage holes - where are they

Quote:
Originally Posted by PanelDeland View Post
When you get ready to reinstall the cowl,put a screen under it.Some make one from HD stuff or most vendors will carry them.It will help keep the crap out so it doesn't clog those drains.
Here is a shot of the trash screens I got from LMC, pretty nice really and not much $$. BTW A/C trucks have a vacuum operated flap in the cowel on that side that opens for fresh air.
Attached Images
 
__________________
70 GMC Short Stepside "Rose"-An American Beauty: Factory 402/TH400, AM/FM, AC, Tilt, Tach, Buckets, Posi, PS, PB, 3-5 Drop, Complete Resto-Rod
67 C-20 Slant Back Wrecker "Mad Max"
67 C-10 Ratrod "Step-N-Wolf"
71 Serro Scotty Sportsman camper "Scotty"
97 LT1 Z28 "The Hornet"

Link to more pics of "Rose" http://67-72chevytrucks.com/vboard/a...p?albumid=1684

Check out my "Cheap Tricks" thread and add to it if you can, lots of good info there. http://67-72chevytrucks.com/vboard/s...d.php?t=489394
RenoKeene is offline   Reply With Quote
Old 10-19-2011, 06:18 PM   #18
67gmcstepside
Registered User
 
Join Date: Jan 2010
Location: jackson
Posts: 676
Re: Cowl water drainage holes - where are they

Looks like the PO thought he was fixing a rust problem and replace the entire air vent box but forgot to add any drainage holes. I wiill have to go with mpotts attack and cut out the bottom of the nicely sealed air box.
Thank you all for your time responding to my inquires.
don
Posted via Mobile Device
67gmcstepside is offline   Reply With Quote
Old 10-19-2011, 06:33 PM   #19
eightbanger
454 MAKES IT ROAR
 
eightbanger's Avatar
 
Join Date: Jan 2008
Location: Essex, U.K
Posts: 2,709
Re: Cowl water drainage holes - where are they

Quote:
Originally Posted by steinepstein View Post
I'll get you a picture and upload it tonight.

I feel like you could get your hand in the vent hole and find the gap.
Quote:
Originally Posted by 67gmcstepside View Post
thank you very much. A pic will go a long way. Last night in the dark I felt around inside the vent hole and it felt like ther PO patched the area with roof cement. I probally will have to dig it out.
Yes we've all been there, in the dark feeling around inside trying to find the hole/gap...and how we wished a buddy could have shown a picture of where to find it.
__________________
Nigel.

An American living in a British body.

1971 Chevy Cheyenne 10 454

"In a time of universal deceit, telling the truth becomes a revolutionary act." - George Orwell


"When injustice becomes law, resistance becomes duty" - Thomas Jefferson

No more pain.
03.12.60 -- 12.28.10

http://www.youtube.com/Eightbanger
eightbanger is offline   Reply With Quote
Old 10-19-2011, 07:15 PM   #20
67gmcstepside
Registered User
 
Join Date: Jan 2010
Location: jackson
Posts: 676
Re: Cowl water drainage holes - where are they

Well said!
Posted via Mobile Device
67gmcstepside is offline   Reply With Quote
Old 01-13-2021, 03:50 AM   #21
sinannasirli
Registered User
 
Join Date: Nov 2018
Location: Turkey - Istanbul
Posts: 28
Re: Cowl water drainage holes - where are they

Hi, i know this is an old thread but easier for all for me to post here..
i noticed two holes, one in each side below the cowl area..
Are they a somehow added by PO, to drain the water (strangely into the cab) or
should these holes be blocked by a rubber plug etc?

Picture belowtaken from inside the glove box)



Thanks
__________________
Istanbul - Turkey
1969 Chevy 4x4 Suburban - i6 250 ci
1953 Willys CJ-3B
1958 BMW R26
1996 Lotus Elan s2
sinannasirli is offline   Reply With Quote
Old 01-13-2021, 04:00 AM   #22
HO455
Registered User
 
HO455's Avatar
 
Join Date: Feb 2016
Location: Portland Oregon
Posts: 7,729
Re: Cowl water drainage holes - where are they

I believe those are the factory holes to allow condensation on the inside of the windshield to drain. You should be able to see them just below the windshield gasket on each side of the dash.
__________________
Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help.
1967 Burban the WMB,1991 S(stink)-10 Blazer,1969 GTO, 1970 Javelin, 1952 F3 Ford 4X4, 29 Model A, 72 Firebird. 85 Alfa Romeo
If it breaks I didn't want it in the first place
The WMB http://67-72chevytrucks.com/vboard/s...d.php?t=698377
HO455 is offline   Reply With Quote
Old 01-13-2021, 09:04 AM   #23
sinannasirli
Registered User
 
Join Date: Nov 2018
Location: Turkey - Istanbul
Posts: 28
Re: Cowl water drainage holes - where are they

Thank you.. that would make sense.. i just replaced my cracked windshield, and it was not the best fit... so i should probably try a sealant job?
__________________
Istanbul - Turkey
1969 Chevy 4x4 Suburban - i6 250 ci
1953 Willys CJ-3B
1958 BMW R26
1996 Lotus Elan s2
sinannasirli is offline   Reply With Quote
Old 01-13-2021, 11:16 PM   #24
Peanut74
Registered User
 
Join Date: May 2018
Location: Prattville, AL
Posts: 184
Re: Cowl water drainage holes - where are they

Here are a couple pics of the factory cut as discussed above.
My fenders are off so pics were easy to take. The A-pillar I to the right of the cut.
Attached Images
  
__________________
--------------------------------------------------------
1967 C10 "Snowball" (Currently in a bazillion pieces)
1989 Toyota DLX pickup "The Hulk"
2012 Jeep JKU "Crush"
Peanut74 is offline   Reply With Quote
Reply

Bookmarks

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 05:11 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Copyright 1997-2020 67-72chevytrucks.com