correct (stock) firewall holes??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

69 air cab · 10-29-2005, 09:27 PM

anyone have good clear pics of a 69 C10 firewall for v8 with A/C? I have what I think are extra holes and would like to know what I should weld up.

72 CustomCamper · 10-30-2005, 01:24 AM

Don't know if this helps or not, but all I have...

Chuck

69 air cab · 10-30-2005, 07:59 AM

thanks Chuck. now if we can get some more from others it would be a big help. I know I have at least two holes on the section just behind the engine that should not be there.....i think

67chevemall · 10-31-2005, 01:41 PM

I would like to know this too! I have holes I don't use.
And would like to use the right one and weld up the others.
I'll get some pics later.

Low69CST · 10-31-2005, 03:23 PM

There is one hole next to the AC unit that needs to be welded up I think. Atleast it looked funny on mine.

69 air cab · 11-06-2005, 07:33 PM

still looking for the correct holes in the firewall. Can you help with pics of firewall?

**VetteVet** · 11-06-2005, 07:48 PM

hope this helps

69 air cab · 11-06-2005, 08:00 PM

WOW VetteVet........this is great. I really really appreciate the info. Betweek you and 75 customer camper this is very good info. One questions.......looking at your pic and looking at the hole to the left of the throttle linkage, on the other side of the indented area that is over the tranny, what are the correct holes in that area? I have about 5 holes in that area. Thanks a lot.

matthufham · 11-06-2005, 08:26 PM

i just took my ac and heater assembly off the firewall yesterday! does everybody else find a ton of leaves back there? how does that happen?

**VetteVet** · 11-06-2005, 09:38 PM

Well I went out and looked at the firewall on my 67 that I'm re-doing and there are also 5 holes in the area to the left (passenger side) of the throttle mount. These are small 1/4 to 5/16 diameter holes and the one in the center of the trans hump has a sheet metal screw coming from the inside of the cab. I'm guessing it's a heater duct mount. I can't get in to look until I can roll the truck outside the garage. the two on the far left have rubber plugs in them. Those are about a foot apart vertically. Anything else was empty. You are not refering to the heater core housing mounts are you?

69 air cab · 11-06-2005, 09:56 PM

if you'll look at Matthulham's pic he sent you will see the grommet on the right side of the pic that has three wires/hoses coming out of it...........this is the area where I ahve a big hole like he has then I have abut 4 others anywhere from 1/4 to about 1/2" in dia.

**VetteVet** · 11-06-2005, 10:47 PM

My 67 doesn't have the large hole with the grommet where the wires come through but there is a dimple there and the small holes have the 2 rubber plugs in them. The others are just open. HTH

kaycee · 11-06-2005, 11:31 PM

Looks like a pretty good space between the windows on A/C side can some one measure the gap between the windows for me.I only welded in a 3" piece on mine wonder (non a/c cab)how crtical this would be looks like my a/c heater will still be seperate.Thanks

**truckdude239** · 11-07-2005, 12:06 AM

i opened the vents under thdash and for 3 days i had leaves comingout of them lol and when i turn my fan on it sounds like i got leaves in it to lol

10-29-2005, 09:27 PM	#1
69 air cab Registered User Join Date: Oct 2003 Location: Maryville, TN Posts: 477	correct (stock) firewall holes??? anyone have good clear pics of a 69 C10 firewall for v8 with A/C? I have what I think are extra holes and would like to know what I should weld up.

10-30-2005, 01:24 AM	#2
72 CustomCamper huh ??? Join Date: Nov 2002 Location: Fredericksburg,Va. Posts: 3,368	Re: correct (stock) firewall holes??? Don't know if this helps or not, but all I have... Chuck Attached Images __________________ 90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!"

10-30-2005, 07:59 AM	#3
69 air cab Registered User Join Date: Oct 2003 Location: Maryville, TN Posts: 477	Re: correct (stock) firewall holes??? thanks Chuck. now if we can get some more from others it would be a big help. I know I have at least two holes on the section just behind the engine that should not be there.....i think

10-31-2005, 01:41 PM	#4
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Re: correct (stock) firewall holes??? I would like to know this too! I have holes I don't use. And would like to use the right one and weld up the others. I'll get some pics later. __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD

10-31-2005, 03:23 PM	#5
Low69CST Registered User Join Date: May 2000 Location: Frankfort, Kentucky, USA Posts: 2,163	Re: correct (stock) firewall holes??? There is one hole next to the AC unit that needs to be welded up I think. Atleast it looked funny on mine. __________________ '69 CST Short fleetside Lowered, 400 small block, 700R4, 4 wheel disc brakes, front sway bar & rear camaro sway bar (in progress) '87 V10 4x4 Short Fleetside Quad Suspension and Dual Tanks

11-06-2005, 07:33 PM	#6
69 air cab Registered User Join Date: Oct 2003 Location: Maryville, TN Posts: 477	Re: correct (stock) firewall holes??? still looking for the correct holes in the firewall. Can you help with pics of firewall?

11-06-2005, 07:48 PM	#7
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,719	Re: correct (stock) firewall holes??? hope this helps Attached Images __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

11-06-2005, 08:00 PM	#8
69 air cab Registered User Join Date: Oct 2003 Location: Maryville, TN Posts: 477	Re: correct (stock) firewall holes??? WOW VetteVet........this is great. I really really appreciate the info. Betweek you and 75 customer camper this is very good info. One questions.......looking at your pic and looking at the hole to the left of the throttle linkage, on the other side of the indented area that is over the tranny, what are the correct holes in that area? I have about 5 holes in that area. Thanks a lot.

11-06-2005, 08:26 PM	#9
matthufham Registered User Join Date: Feb 2005 Location: Carl Junction, Missouri Posts: 2,061	Re: correct (stock) firewall holes??? i just took my ac and heater assembly off the firewall yesterday! does everybody else find a ton of leaves back there? how does that happen? Attached Images

11-06-2005, 09:38 PM	#10
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,719	Re: correct (stock) firewall holes??? Well I went out and looked at the firewall on my 67 that I'm re-doing and there are also 5 holes in the area to the left (passenger side) of the throttle mount. These are small 1/4 to 5/16 diameter holes and the one in the center of the trans hump has a sheet metal screw coming from the inside of the cab. I'm guessing it's a heater duct mount. I can't get in to look until I can roll the truck outside the garage. the two on the far left have rubber plugs in them. Those are about a foot apart vertically. Anything else was empty. You are not refering to the heater core housing mounts are you? __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

11-06-2005, 09:56 PM	#11
69 air cab Registered User Join Date: Oct 2003 Location: Maryville, TN Posts: 477	Re: correct (stock) firewall holes??? if you'll look at Matthulham's pic he sent you will see the grommet on the right side of the pic that has three wires/hoses coming out of it...........this is the area where I ahve a big hole like he has then I have abut 4 others anywhere from 1/4 to about 1/2" in dia.

11-06-2005, 10:47 PM	#12
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,719	Re: correct (stock) firewall holes??? My 67 doesn't have the large hole with the grommet where the wires come through but there is a dimple there and the small holes have the 2 rubber plugs in them. The others are just open. HTH __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

11-06-2005, 11:31 PM	#13
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,453	Re: correct (stock) firewall holes??? Looks like a pretty good space between the windows on A/C side can some one measure the gap between the windows for me.I only welded in a 3" piece on mine wonder (non a/c cab)how crtical this would be looks like my a/c heater will still be seperate.Thanks __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327/4L60

11-07-2005, 12:06 AM	#14
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: correct (stock) firewall holes??? i opened the vents under thdash and for 3 days i had leaves comingout of them lol and when i turn my fan on it sounds like i got leaves in it to lol Last edited by truckdude239; 11-07-2005 at 12:07 AM.



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