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 1960 - 1966 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 01-10-2023, 06:18 PM   #1
72Mountaineer
Registered User
 
72Mountaineer's Avatar
 
Join Date: Oct 2010
Location: Where Mountaineers are free
Posts: 406
Firewall holes

Getting along with the 64 C10 project, need a map or diagram of the holes to see which ones will be needed. Some are obvious, some are not.
72Mountaineer is offline   Reply With Quote
Old 01-10-2023, 07:17 PM   #2
jweb
Registered User
 
jweb's Avatar
 
Join Date: Apr 2010
Location: Oregon
Posts: 1,184
Re: Firewall holes

Here's a diagram
Attached Images
 
__________________
1951 Truck, LS1/4L60
1964 Suburban, current project
2014 Silverado daily driver
1953 Westerner "canned ham" trailer, rebuilt
1974 Prowler trailer, rebuilt
jweb is offline   Reply With Quote
Old 01-12-2023, 06:35 PM   #3
ray_mcavoy
Registered User
 
Join Date: Nov 2009
Location: Sherman, ME
Posts: 2,361
Re: Firewall holes

That's a really good diagram. I'd just like to add that I think the hole marked "choke cable" was only used for 6-cyl engines. Pretty sure V8's had their choke cable running through another hole in the same grommet as the oil pressure line.

Also, trucks with factory windshield washers will have an additional hole for the hoses to pass through located a few inches up above the "blower fan" wire hole.
ray_mcavoy is offline   Reply With Quote
Old 10-22-2024, 05:09 PM   #4
racecougar
Registered User
 
racecougar's Avatar
 
Join Date: Jan 2013
Location: Imperial, MO
Posts: 1,003
Re: Firewall holes

Nice to see my diagram still being of use to folks.

That was a ‘65 with the I-6.
__________________
Rod @ AzzKicker Cars
1965 C10 SWB - Build Thread
racecougar is offline   Reply With Quote
Old 10-23-2024, 01:46 AM   #5
Braunschweiger
Registered User
 
Join Date: Aug 2020
Location: Braunschweig, Lower Saxony, Germany
Posts: 804
Re: Firewall holes

The diagram was very useful for my reconstruction.
Thank you for that
__________________
-------------------------------------------

Greetings Harald

My 62 build thread
http://67-72chevytrucks.com/vboard/s...d.php?t=829782
Braunschweiger is offline   Reply With Quote
Old 10-23-2024, 11:01 AM   #6
racecougar
Registered User
 
racecougar's Avatar
 
Join Date: Jan 2013
Location: Imperial, MO
Posts: 1,003
Re: Firewall holes

Quote:
Originally Posted by Braunschweiger View Post
The diagram was very useful for my reconstruction.
Thank you for that
__________________
Rod @ AzzKicker Cars
1965 C10 SWB - Build Thread
racecougar is offline   Reply With Quote
Old 10-23-2024, 11:19 AM   #7
Keith Seymore
Registered User
 
Keith Seymore's Avatar
 
Join Date: May 2009
Location: Motor City
Posts: 9,213
Re: Firewall holes

Quote:
Originally Posted by jweb View Post
Here's a diagram
Nicely done.

I had design/release responsibility for the front of dash/underbody structure on the GMT800/K2 program and I didn't know what all the holes were for.

__________________
Chevrolet Flint Assembly
1979-1986
GM Full Size Truck Engineering
1986 - 2019
Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926
My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524
Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/
Keith Seymore is offline   Reply With Quote
Reply

Bookmarks


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 05:30 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com