I Dunno What It Is - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**special-K** · 02-24-2009, 10:35 AM

Do you?This cab is a 69/70 C/30.What`s that vent looking thing in the floor?

dan42 · 02-24-2009, 10:45 AM

You mean the hole in the floor?

Actually, maybe it's someone's attempt at reducing the fuel smell in the cab...

my67chevytruck · 02-24-2009, 10:46 AM

looks like a vent cap. i wonder if its just sitting on top of the metal?
HMMM....

jaros44sr · 02-24-2009, 10:49 AM

Have you seen anything unusal lately....I vote for Dan. ROTFLMAO

Where is the demensional differance between a C 10 and a C30?

**Hart_Rod** · 02-24-2009, 10:52 AM

Is it mounted to the floor? It kinda looks like a breather on front of the engine oil fill.

**rockc** · 02-24-2009, 11:14 AM

I am thinking i saw one that was used to fill a hydraulic tank under the cab.

vectorit · 02-24-2009, 11:25 AM

Could it be one of those air freshners you buy at the parts store, that just got left behind after the truck seat was removed?

Seriously, I never have seen anything like it other than a breather on a engine. But the fuel vapor idea seems logical..

Ram-Man · 02-24-2009, 11:32 AM

I think thats the button for the ejector seat.

**special-K** · 02-24-2009, 11:41 AM

Here`s a closer view:

Under the cab:

killer71 · 02-24-2009, 11:43 AM

what the heck is that?

jgreene0717 · 02-24-2009, 11:47 AM

Looks homemade to me. I think I will install one on mine looks sweet!!!

big_al_71 · 02-24-2009, 11:51 AM

I think it is to let the farts out of the cab without putting the window down, see the location?

Rigging ingenuity at it's best!!!!

crazy longhorn · 02-25-2009, 08:16 PM

Quote:

Originally Posted by big_al_71

I think it is to let the farts out of the cab without putting the window down, see the location?

Rigging ingenuity at it's best!!!!

LOL! Thats what I thought.....its a "Fart dissapator"

drivethechevy · 02-25-2009, 08:32 PM

maybe it was the fill cap for a full frame or boxed frame gas tank, i have seen a motorcycle where the frame was used as another gas tank, id say its probly nothing factory

69Warrior · 03-03-2009, 11:54 AM

Quote:

Originally Posted by big_al_71

I think it is to let the farts out of the cab without putting the window down, see the location?

Rigging ingenuity at it's best!!!!

was gonna say the same thing...good stuff right there

old Chevy guy · 02-24-2009, 11:53 AM

What happend to the rest of the truck? could it be some kind of a vent or a breather for a vac booster under the cab.I saw a 3500 gmc once that was supper HD it had 18" wheels with a big bolt pattern like a c 50 or 60 and it had a brake booster under the cab on the frame like my old c60.I dont know why it would need to vent inside the truck though,just throwing it out for consideration.

old Chevy guy · 02-28-2009, 12:09 AM

Quote:

Originally Posted by old Chevy guy

What happend to the rest of the truck? could it be some kind of a vent or a breather for a vac booster under the cab.I saw a 3500 gmc once that was supper HD it had 18" wheels with a big bolt pattern like a c 50 or 60 and it had a brake booster under the cab on the frame like my old c60.I dont know why it would need to vent inside the truck though,just throwing it out for consideration.

Looks like we have a winner! LOL

**special-K** · 02-24-2009, 12:26 PM

You know,Old Chev,that could be it.I never saw the rest of the truck.I believe it was a race car hauler.It`s a Custom/air cab.I didn`t think about those HD 3500s having different brakes.
Maybe Big Al`s right.That was my first thought.Maybe it`s like propane injection but with methane.

**too much stuff** · 02-24-2009, 02:24 PM

I have seen them before in c-40 and bigger trucks, but never paid attention to the reason.

Andy4639 · 02-24-2009, 02:33 PM

What would you vent into the cab? I haven't a clue!Maybe it was to keep the air tight cab from sucking in on the driver!

**WIDESIDE72** · 02-24-2009, 08:35 PM

It could be for something that needs venting like a rear axle does. For example, an axle does not give off any harmful fumes and it has a vent that is attached to the frame rail to keep it up out of water if crossing a wet area. Maybe there is someone with one of the C50-C60's who can clue us in as to if it is original and what is mounted under the cabs on the big trucks (?)

thirdstreettito · 02-24-2009, 11:34 PM

Maybe where the owner lived it would flood frequently, so he decided to make a drain.

**LockDoc** · 02-25-2009, 12:40 AM

-
Fill tube for the moonshine tank...

LockDoc

**special-K** · 02-25-2009, 12:56 AM

Quote:

Originally Posted by LockDoc

-
Fill tube for the moonshine tank...

LockDoc

Yeah,and it`s vented so the juice do`t swell up and blow!

67CHIP72 · 02-25-2009, 12:57 AM

Thats a cap for the pee container for long trips when you can't pit stop.

02-24-2009, 10:35 AM	#1
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,863	I Dunno What It Is Do you?This cab is a 69/70 C/30.What`s that vent looking thing in the floor? __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

02-24-2009, 10:45 AM	#2
dan42 Registered User Join Date: Feb 2007 Location: Cali Central Coast Posts: 5,191	Re: I Dunno What It Is You mean the hole in the floor? Actually, maybe it's someone's attempt at reducing the fuel smell in the cab... __________________ '67 SWB Fleetside ZZ4/350/Tremec 5-speed/4link/Scott's IFS - and fun as heck! SOLD Click here to support the board Philippians 4: 6-7

02-24-2009, 10:46 AM	#3
my67chevytruck Under Construction Join Date: Oct 2007 Location: Midlothian,TX (DFW) Posts: 4,555	Re: I Dunno What It Is looks like a vent cap. i wonder if its just sitting on top of the metal? HMMM.... __________________ Heath subscribe to the board here: http://67-72chevytrucks.com/vboard/payments.php http://67-72chevytrucks.com/vboard/s...d.php?t=157669 FAQ how to's 1956 Chevy Apache 1967 C10 SWB FleetSide (under construction) 1969 K10 SWB FleetSide (Future Build) 1972 C10 SWB Stepside (Future Build) 56 chevy truck : http://www.cardomain.com/ride/2955823/1 67 truck build: http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1 69 k10: http://67-72chevytrucks.com/vboard/s...d.php?t=389470

02-24-2009, 10:49 AM	#4
jaros44sr Registered User Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,426	Re: I Dunno What It Is Have you seen anything unusal lately....I vote for Dan. ROTFLMAO Where is the demensional differance between a C 10 and a C30? __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim Last edited by jaros44sr; 02-24-2009 at 10:52 AM.

02-24-2009, 10:52 AM	#5
Hart_Rod ************* Join Date: Apr 2005 Location: Pensacola, FL Posts: 17,831	Re: I Dunno What It Is Is it mounted to the floor? It kinda looks like a breather on front of the engine oil fill. Attached Images __________________ Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 Last edited by Hart_Rod; 02-24-2009 at 10:57 AM.

02-24-2009, 11:14 AM	#6
rockc Registered User Join Date: Jul 2007 Location: SE WY Posts: 633	Re: I Dunno What It Is I am thinking i saw one that was used to fill a hydraulic tank under the cab. __________________ 72 chevy 3/4 ton 4X4

02-24-2009, 11:25 AM	#7
vectorit What? Join Date: Jun 2007 Location: Southern California Posts: 7,617	Re: I Dunno What It Is Could it be one of those air freshners you buy at the parts store, that just got left behind after the truck seat was removed? Seriously, I never have seen anything like it other than a breather on a engine. But the fuel vapor idea seems logical.. __________________ Chris 1968 K20 Suburban 1972 K10 LWB PU

02-24-2009, 11:32 AM	#8
Ram-Man Senior Member Join Date: Aug 2006 Location: Minnesota Posts: 943	Re: I Dunno What It Is I think thats the button for the ejector seat. __________________ Porterbuilt 8 Lugger http://67-72chevytrucks.com/vboard/s...d.php?t=691739

02-24-2009, 11:41 AM	#9
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,863	Re: I Dunno What It Is Here`s a closer view: Under the cab: __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

02-24-2009, 11:43 AM	#10
killer71 Registered User Join Date: May 2006 Location: at work Posts: 2,552	Re: I Dunno What It Is what the heck is that? __________________ R.I.P. Killer 71 10/26/07

02-24-2009, 11:47 AM	#11
jgreene0717 Jason Join Date: Sep 2008 Location: Wetumpka, AL Posts: 152	Re: I Dunno What It Is Looks homemade to me. I think I will install one on mine looks sweet!!!

02-24-2009, 11:51 AM	#12
big_al_71 Registered User Join Date: Jun 2008 Location: South Florida Posts: 11,375	Re: I Dunno What It Is I think it is to let the farts out of the cab without putting the window down, see the location? Rigging ingenuity at it's best!!!! __________________ Get your facts first, and then you can distort them as much as you please!!!!!. Sylvester's build thread >>>http://67-72chevytrucks.com/vboard/s...ht=big+rebuild Last edited by big_al_71; 02-24-2009 at 11:51 AM.

02-25-2009, 08:32 PM	#14
drivethechevy Registered User Join Date: May 2007 Location: Buffalo MN Posts: 606	Re: I Dunno What It Is maybe it was the fill cap for a full frame or boxed frame gas tank, i have seen a motorcycle where the frame was used as another gas tank, id say its probly nothing factory __________________ Trial and Error, its expensive but its a mistake i most likely wont make again 1971 chevy k10 custom deluxe http://67-72chevytrucks.com/vboard/s...d.php?t=341257 1968 chevy k/10 fleet http://67-72chevytrucks.com/vboard/s...d.php?t=334731 1948 desoto custom coupe fluid drive(family heirloom)

02-24-2009, 11:53 AM	#16
old Chevy guy Registered User Join Date: Apr 2007 Location: Foster Rhode Island Posts: 1,176	Re: I Dunno What It Is What happend to the rest of the truck? could it be some kind of a vent or a breather for a vac booster under the cab.I saw a 3500 gmc once that was supper HD it had 18" wheels with a big bolt pattern like a c 50 or 60 and it had a brake booster under the cab on the frame like my old c60.I dont know why it would need to vent inside the truck though,just throwing it out for consideration.

02-24-2009, 12:26 PM	#18
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,863	Re: I Dunno What It Is You know,Old Chev,that could be it.I never saw the rest of the truck.I believe it was a race car hauler.It`s a Custom/air cab.I didn`t think about those HD 3500s having different brakes. Maybe Big Al`s right.That was my first thought.Maybe it`s like propane injection but with methane. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~



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02-24-2009, 02:24 PM	#19
too much stuff Roadtrip! Join Date: Feb 2003 Location: Grand Rapids MN Posts: 13,709	Re: I Dunno What It Is I have seen them before in c-40 and bigger trucks, but never paid attention to the reason. __________________ 67 gmc custom lwb dakota truck. Sold...And bought back 69 swb 4x4 project (in progress) 70 c-10 lwb texas truck 70 4x4/BB/bkts/posi/tach(retired) 70 swb (wifes) 70 jimmy camper 71 K-5 factory 2wd 71 cheyenne 4x4/tach/posi/ plow rig 71 Cheyenne20 BB, buckets, tach, tilt, 4 speed 72 jimmy CST wyoming rig 72 jimmy Colorado rig 72 lifted texas 4x4 3/4 ton burb 65 fury conv. 383/auto 65 chrysler 300 "L" 413 auto

02-24-2009, 02:33 PM	#20
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: I Dunno What It Is What would you vent into the cab? I haven't a clue!Maybe it was to keep the air tight cab from sucking in on the driver! __________________ 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.

02-24-2009, 08:35 PM	#21
WIDESIDE72 Senior Member Join Date: Aug 2008 Location: Cedar Park, Texas Posts: 7,494	Re: I Dunno What It Is It could be for something that needs venting like a rear axle does. For example, an axle does not give off any harmful fumes and it has a vent that is attached to the frame rail to keep it up out of water if crossing a wet area. Maybe there is someone with one of the C50-C60's who can clue us in as to if it is original and what is mounted under the cabs on the big trucks (?) Last edited by WIDESIDE72; 02-24-2009 at 08:35 PM.

02-24-2009, 11:34 PM	#22
thirdstreettito Resident of Here Join Date: May 2008 Location: Wesley Chapel, FL, USA Posts: 7,716	Re: I Dunno What It Is Maybe where the owner lived it would flood frequently, so he decided to make a drain. __________________ ~Bradley~ 2004 Black GTO LS2/T56 too much to list Miss having a truck Last edited by thirdstreettito; 02-24-2009 at 11:34 PM.

02-25-2009, 12:40 AM	#23
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,334	Re: I Dunno What It Is - Fill tube for the moonshine tank... LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

02-25-2009, 12:57 AM	#25
67CHIP72 STOLEN Join Date: Jun 2006 Location: Orange County Posts: 1,022	Re: I Dunno What It Is Thats a cap for the pee container for long trips when you can't pit stop. __________________ In Search Of

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