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05-07-2014, 09:17 AM
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#1 |
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Registered User
Join Date: Dec 1999
Location: Mississippi
Posts: 119
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Vacuum Gauge Installation
I'm trying to install a vacuum gauge and need photos or a description of how the hose runs from back of the manifold into the cab. I know it would have originally been a steel line (i'll be installing a hose), but where does it penetrate the firewall? An existing grommet or new hole?
Seems I saw a write up at one time detailing the installation, but I've searched and can't come up with anything.
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1970 GMC Custom 1500 SWB 307/TH350 3.73 Positrac |
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05-07-2014, 10:37 AM
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#2 |
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70+ ( Old Skool Club )
 
Join Date: Nov 2003
Location: Saskatoon, Saskatchewan ,Canada
Posts: 9,143
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Re: Vacuum Gauge Installation
This thread may help you some. There is a grommet in the firewall behind the distributor toward the drivers side and wires and the oil pressure gauge line goes through it. That is where I am going to run mine through.
http://67-72chevytrucks.com/vboard/s...10#post6526010
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1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021 |
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05-07-2014, 11:14 AM
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#3 |
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Registered User
Join Date: Dec 1999
Location: Mississippi
Posts: 119
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Re: Vacuum Gauge Installation
That's what I was looking for! Thanks.
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1970 GMC Custom 1500 SWB 307/TH350 3.73 Positrac |
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05-07-2014, 11:41 AM
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#4 |
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70+ ( Old Skool Club )
Join Date: Nov 2003
Location: Saskatoon, Saskatchewan ,Canada
Posts: 9,143
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Re: Vacuum Gauge Installation
Where are you going to get your vacuum from, the intake manifold?
__________________
1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021 |
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05-07-2014, 11:45 AM
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#5 |
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Registered User
Join Date: Dec 1999
Location: Mississippi
Posts: 119
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Re: Vacuum Gauge Installation
yes behind the carb.
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1970 GMC Custom 1500 SWB 307/TH350 3.73 Positrac |
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05-07-2014, 12:02 PM
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#6 |
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70+ ( Old Skool Club )
Join Date: Nov 2003
Location: Saskatoon, Saskatchewan ,Canada
Posts: 9,143
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Re: Vacuum Gauge Installation
I had single tree fitting in my intake and ordered the one in the attachment which should make for a clean installation. I plan to use steel under the hood and once through the firewall use rubber hose under the dash.
https://www.paragoncorvette.com/p-35...m-fitting.aspx
__________________
1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021 |
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06-25-2014, 08:59 PM
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#7 |
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Senior Member
Join Date: Nov 2012
Location: BY THE CAROLINA SEA
Posts: 922
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Re: Vacuum Gauge Installation
Ref. the part pictured in post #6,
If I get one of those would it be possible to hook it into the carb intake on my inline 6 where there is an angled "plug screw" then directly to the VAC gauge? Or does this VAC gauge HAVE to be "T"ed into everything?
__________________
FRANKENTRUCK 1981 Chevrolet C10 Shortbed Stepside GRANDTRUCK 1968 Chevrolet C10 Stepside Longbed http://67-72chevytrucks.com/vboard/s...d.php?t=584617 PROJECT JIGSAW 1967 GMC C3500 GREAT WHITE 1986 Blazer M1009 454 engine w/700R4 transmission gas conversion |
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06-26-2014, 12:06 AM
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#8 | |
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70+ ( Old Skool Club )
Join Date: Nov 2003
Location: Saskatoon, Saskatchewan ,Canada
Posts: 9,143
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Re: Vacuum Gauge Installation
Quote:
__________________
1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021 |
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06-26-2014, 12:42 AM
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#9 |
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Senior Member
Join Date: Nov 2012
Location: BY THE CAROLINA SEA
Posts: 922
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Re: Vacuum Gauge Installation
Since I posted this earlier today I have since hooked up the VAC gauge to a nozzle (that was plugged with a rubber cap) on the bottom front of my carb's base. The VAC gauge works now, but I hope this is an OK place to attach this. It seems everyone uses the "T" method to install these.
__________________
FRANKENTRUCK 1981 Chevrolet C10 Shortbed Stepside GRANDTRUCK 1968 Chevrolet C10 Stepside Longbed http://67-72chevytrucks.com/vboard/s...d.php?t=584617 PROJECT JIGSAW 1967 GMC C3500 GREAT WHITE 1986 Blazer M1009 454 engine w/700R4 transmission gas conversion |
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06-26-2014, 09:52 AM
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#10 |
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Registered User
Join Date: Apr 2003
Location: NB
Posts: 3,367
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Re: Vacuum Gauge Installation
Just make sure you use the bottom feeder of the carb so you get your reading for engine vaccum and not the carb vaccum.
I used hose all the way and it works great! The TRU 7 gauges. 
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1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD |
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