Cowl water drainage holes - where are they - The 1947 - Present Chevrolet & GMC Truck Message Board Network

67gmcstepside · 10-19-2011, 10:41 AM

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.

Andy4639 · 10-19-2011, 11:08 AM

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.

mpotts64 · 10-19-2011, 11:17 AM

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

treveiger · 10-19-2011, 01:10 PM

Quote:

Originally Posted by mpotts64

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?
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mpotts64 · 10-19-2011, 01:14 PM

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

dfwright · 10-19-2011, 01:28 PM

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.

10-19-2011, 10:41 AM	#1
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.

10-19-2011, 11:08 AM	#2
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	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.

10-19-2011, 11:17 AM	#3
mpotts64 Registered User 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 -

10-19-2011, 01:14 PM	#5
mpotts64 Registered User 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 -

10-19-2011, 01:28 PM	#6
dfwright Registered User Join Date: Jan 2009 Location: San Antonio, Texas Posts: 1,374	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



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