C3 General General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

79 firewall question,,,

Thread Tools
 
Search this Thread
 
Old Mar 5, 2015 | 09:40 PM
  #1  
toyvet1's Avatar
toyvet1
Thread Starter
Burning Brakes
20 Year Member
 
Joined: Jul 2000
Posts: 1,045
Likes: 3
Default 79 firewall question,,,

Can't anyone tell me what rubber hose/fitting located on the firewall right behind the distributor is for. It's the size of a thick wall vacuum line about 3/8 of a inch. It protrudes about 3/4 out of firewall. It looks like it might have broken of? Thanks,,,
Reply
Old Mar 6, 2015 | 06:39 AM
  #2  
Easy Mike's Avatar
Easy Mike
Team Owner
Supporting Lifetime
20 Year Member
 
Joined: Jun 2000
Posts: 38,923
Likes: 1,481
From: Southbound
Cruise-In II Veteran
Default

Why not post a pic?
Reply
Old Mar 6, 2015 | 08:53 AM
  #3  
Tooonz's Avatar
Tooonz
Burning Brakes
Supporting Member
Conversation Starter
All Eyes On Me
Photogenic
Liked
 
Joined: Oct 2013
Posts: 992
Likes: 28
From: Sutton MA
Default

If no one else answers I can take a look tonight when I get home, if my memory is correct, which is most likely not I think the headlight vac goes in there. I just looked up some pictures I have and I am wrong. The headlight vac is behind the valve cover. I see the one you are talking about and I don't know, I assumed that line went to the heater control.

Last edited by Tooonz; Mar 6, 2015 at 08:57 AM.
Reply
Old Mar 6, 2015 | 09:03 AM
  #4  
GPGG70's Avatar
GPGG70
Drifting
15 Year Member
 
Joined: Mar 2008
Posts: 1,900
Likes: 2
From: Nixa Missouri
Default

The only hose I can think of in the area on the firewall that is similar to this description is the vent line / hose coming off the wiper door actuator. It's the only hose that is opened on the fire wall for a reason.
Reply
Old Mar 6, 2015 | 10:03 AM
  #5  
gbvette62's Avatar
gbvette62
Race Director
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2000
Posts: 12,628
Likes: 3,099
From: Shamong, NJ
Default

Are your windshield washers hooked up? From what your describing, it sounds like it might be the hose for the left side washer.

The washer hose comes off of the tank, runs across the firewall above and behind the brake booster, and into a "T". From the "T", the hose for the left side, goes through the firewall, just to the right of the distributor recess in the firewall. Only a short section of hose, is on the engine side of the firewall.
Reply
Old Mar 6, 2015 | 10:14 AM
  #6  
speedreed8's Avatar
speedreed8
Melting Slicks
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2006
Posts: 2,417
Likes: 336
From: Texas
Default

i think that is a rubber plug or bushing that is pushed in from the interior during assembly. the end of it may have been knocked off so it looks like a hose. it in the middle of the pic above trans collar on firewall, took this when i rebuilt my engine.
Reply
Old Mar 6, 2015 | 03:40 PM
  #7  
gbvette62's Avatar
gbvette62
Race Director
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2000
Posts: 12,628
Likes: 3,099
From: Shamong, NJ
Default

If that's what the OP is referring to, I believe that's the back side of one of the carpet plugs, that hold the firewall insulation and carpet, in place.

Originally Posted by speedreed8
i think that is a rubber plug or bushing that is pushed in from the interior during assembly. the end of it may have been knocked off so it looks like a hose. it in the middle of the pic above trans collar on firewall, took this when i rebuilt my engine.
Reply
Old Mar 6, 2015 | 04:53 PM
  #8  
speedreed8's Avatar
speedreed8
Melting Slicks
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2006
Posts: 2,417
Likes: 336
From: Texas
Default

Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-1

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-2

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-3

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-4

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-5

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-6

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-7

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-8

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-9

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
Old Mar 6, 2015 | 07:45 PM
  #9  
toyvet1's Avatar
toyvet1
Thread Starter
Burning Brakes
20 Year Member
 
Joined: Jul 2000
Posts: 1,045
Likes: 3
Default

Thanks for the ideas. I'll check when I get outside and get back to you. Thanks
Reply
Old Mar 7, 2015 | 12:36 AM
  #10  
toyvet1's Avatar
toyvet1
Thread Starter
Burning Brakes
20 Year Member
 
Joined: Jul 2000
Posts: 1,045
Likes: 3
Default

I had a chance to look at it close. It looks like it's just plug of some type. It isn't washer tubing, vacuum line, I think I just broke off the tip making it look different,,,
Reply

Get notified of new replies

To 79 firewall question,,,





All times are GMT -4. The time now is 08:55 PM.

story-0
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-1
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-2
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-3
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-4
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-5
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-6
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-7
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-8
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-9
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE