What the hole is this? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

8door · 12-20-2005, 06:04 PM

Got engine and tranny out Friday, and found a piece of electrical tape covering a hole in firewall. It is just left and down from steering wheel shaft.
Looks like it a factory stamped hole.
What is it for?

wink_tim · 12-20-2005, 06:15 PM

My guess is its the hole for clutch linkage. Got a picture?

**truckdude239** · 12-20-2005, 06:22 PM

8door · 12-20-2005, 06:27 PM

For some reason my machine won't size pics for this forumIt used to just fine.
Correction The hole is RIGHT side of shaft sorry I was looking at cab from front.
So not clutch linkage. Truck is automatic, which makes me think it might be a hole for another some other option not equiped on this truck?

8door · 12-20-2005, 06:30 PM

Looks like it won't spell either. FORUM is what I was trying to say.
I'll work on the picture resizing.

matthufham · 12-20-2005, 06:36 PM

here i'll help, pic a #.

8door · 12-20-2005, 06:53 PM

Thanks for help.
But the hole is just at floor level of cab. Size about 1 1/2 inch, more oval shape. More like what a rod or tube would go through.
This is frustrating because I have good pictures.

Longhorn Man · 12-20-2005, 06:58 PM

That is the clutch linkage hole. I'll try do dog up pics here in a min, they7 came in 2 locations, so I'll post both holes.
There was a stamped metal snap in plug in there 30 years ago, but it probably fell out 20 years ago and some one's feet were cold so the tape cot comissioned for the job.
The hole is about 1 1/2 inches or so, and slightly oval, right> And it is to the right of your gas pedal as you are in the truck.

farside847 · 12-20-2005, 07:01 PM

theres a hole in by bucket, dear liza dear liza, theres a hole in my bucket, dear liza theres a hole. (bump)

Longhorn Man · 12-20-2005, 07:13 PM

Notice, on the gold firewall, the hole is facing the front of the truck. This is how most 67 - 72 truck cabs are. I did a poll a few years ago and something like 75% were like this one. That is my 70 one ton Longhorn... my spare cab, '70 3/4 ton longhorn is the same way.
The other picture, the black firewall, that is my X-truck, 69 GMC 1/2 ton short/fleet. You can see the hole is facing the frame.
No one has been able to clue in some light... no one has even had a good theory.
It just is what it is.

68 short step · 12-20-2005, 07:15 PM

here this might help

Longhorn Man · 12-20-2005, 07:19 PM

I think he is talking about the one right by the white X on your firewall. I used to have a pic of the stock plug that filled the hole, I found one and sold it on here 2 years ago or so.

**tnblazerk5** · 12-20-2005, 07:44 PM

Quote:

Originally Posted by 68 short step

here this might help

on a big block v6 truck the hole (with the x above it )is lower on the firewall

8door · 12-20-2005, 07:45 PM

That's it , X marks the spot "you got a hole in your bucket too"
So I can fabricate a plug that is easy.Now I can get on with next set of questions that are sure to come up.
Thanks
Going to get a hammer and some nails and fix this computer picture thing.
or maybe duct tape.

**tnblazerk5** · 12-20-2005, 07:48 PM

here what i am talkin about the clutch linkage hole being lower

**tnblazerk5** · 12-20-2005, 07:50 PM

Quote:

Originally Posted by 8door

That's it , X marks the spot "you got a hole in your bucket too"
So I can fabricate a plug that is easy.Now I can get on with next set of questions that are sure to come up.
Thanks
Going to get a hammer and some nails and fix this computer picture thing.
or maybe duct tape.

they make a plug for that hole from the factory as longhornman said

8door · 12-20-2005, 08:18 PM

Got out a little hammer to fix the pix. Later will be the big hammer

Olden Days · 12-20-2005, 08:48 PM

a rare option cover here

8door · 12-20-2005, 09:08 PM

Gotta love imagination.
I was thinking of just welding the hole closed.

12-20-2005, 06:04 PM	#1
8door Not too old to learn Join Date: Mar 2004 Location: SoCal Posts: 617	What the hole is this? Got engine and tranny out Friday, and found a piece of electrical tape covering a hole in firewall. It is just left and down from steering wheel shaft. Looks like it a factory stamped hole. What is it for? __________________ 1968 C10 a way to long restoration.

12-20-2005, 06:15 PM	#2
wink_tim Registered User Join Date: Jun 2003 Location: Rowlett, TX Posts: 120	Re: What the hole is this? My guess is its the hole for clutch linkage. Got a picture? __________________ 67 SWB

12-20-2005, 06:22 PM	#3
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,230	Re: What the hole is this? __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

12-20-2005, 06:27 PM	#4
8door Not too old to learn Join Date: Mar 2004 Location: SoCal Posts: 617	Re: What the hole is this? For some reason my machine won't size pics for this forumIt used to just fine. Correction The hole is RIGHT side of shaft sorry I was looking at cab from front. So not clutch linkage. Truck is automatic, which makes me think it might be a hole for another some other option not equiped on this truck? __________________ 1968 C10 a way to long restoration.

12-20-2005, 06:30 PM	#5
8door Not too old to learn Join Date: Mar 2004 Location: SoCal Posts: 617	Re: What the hole is this? Looks like it won't spell either. FORUM is what I was trying to say. I'll work on the picture resizing. __________________ 1968 C10 a way to long restoration.

12-20-2005, 06:36 PM	#6
matthufham Registered User Join Date: Feb 2005 Location: Carl Junction, Missouri Posts: 2,061	Re: What the hole is this? here i'll help, pic a #.

12-20-2005, 06:53 PM	#7
8door Not too old to learn Join Date: Mar 2004 Location: SoCal Posts: 617	Re: What the hole is this? Thanks for help. But the hole is just at floor level of cab. Size about 1 1/2 inch, more oval shape. More like what a rod or tube would go through. This is frustrating because I have good pictures. __________________ 1968 C10 a way to long restoration.

12-20-2005, 06:58 PM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: What the hole is this? That is the clutch linkage hole. I'll try do dog up pics here in a min, they7 came in 2 locations, so I'll post both holes. There was a stamped metal snap in plug in there 30 years ago, but it probably fell out 20 years ago and some one's feet were cold so the tape cot comissioned for the job. The hole is about 1 1/2 inches or so, and slightly oval, right> And it is to the right of your gas pedal as you are in the truck.

12-20-2005, 07:01 PM	#9
farside847 Registered User Join Date: Feb 2005 Location: Bay Area, California Posts: 995	Re: What the hole is this? theres a hole in by bucket, dear liza dear liza, theres a hole in my bucket, dear liza theres a hole. (bump) __________________ 1971 Chevy C10 Shortbed Stepside, 307v8 3-on-the-tree

12-20-2005, 07:13 PM	#10
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: What the hole is this? Notice, on the gold firewall, the hole is facing the front of the truck. This is how most 67 - 72 truck cabs are. I did a poll a few years ago and something like 75% were like this one. That is my 70 one ton Longhorn... my spare cab, '70 3/4 ton longhorn is the same way. The other picture, the black firewall, that is my X-truck, 69 GMC 1/2 ton short/fleet. You can see the hole is facing the frame. No one has been able to clue in some light... no one has even had a good theory. It just is what it is. Attached Images

12-20-2005, 07:15 PM	#11
68 short step Senior Member Join Date: Aug 2005 Location: tulsa OK Posts: 3,070	Re: What the hole is this? here this might help Last edited by 68 short step; 12-20-2005 at 07:17 PM.

12-20-2005, 07:19 PM	#12
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: What the hole is this? I think he is talking about the one right by the white X on your firewall. I used to have a pic of the stock plug that filled the hole, I found one and sold it on here 2 years ago or so.

12-20-2005, 07:45 PM	#14
8door Not too old to learn Join Date: Mar 2004 Location: SoCal Posts: 617	Re: What the hole is this? That's it , X marks the spot "you got a hole in your bucket too" So I can fabricate a plug that is easy.Now I can get on with next set of questions that are sure to come up. Thanks Going to get a hammer and some nails and fix this computer picture thing. or maybe duct tape. __________________ 1968 C10 a way to long restoration.

12-20-2005, 07:48 PM	#15
tnblazerk5 User #12137 Join Date: Apr 2004 Location: kingsport,upper east tenn Posts: 11,598	Re: What the hole is this? here what i am talkin about the clutch linkage hole being lower Last edited by tnblazerk5; 12-20-2005 at 07:49 PM.

12-20-2005, 08:18 PM	#17
8door Not too old to learn Join Date: Mar 2004 Location: SoCal Posts: 617	Re: What the hole is this? Got out a little hammer to fix the pix. Later will be the big hammer Attached Images __________________ 1968 C10 a way to long restoration.



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12-20-2005, 08:48 PM	#18
Olden Days Living In The Past Join Date: Nov 2003 Location: Rockies Posts: 709	Re: What the hole is this? a rare option cover here Attached Images

12-20-2005, 09:08 PM	#19
8door Not too old to learn Join Date: Mar 2004 Location: SoCal Posts: 617	Re: What the hole is this? Gotta love imagination. I was thinking of just welding the hole closed. __________________ 1968 C10 a way to long restoration.

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