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#1 |
Hot Damn - Here I Am!!
Join Date: Feb 2000
Location: Ringgold, Georgia
Posts: 726
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How does the FACTORY vacuum gauge hook up? I know that probably all that would have to be done is to run a rubber hose from the vacuum port behind the carb to the gauge but how was it done from GM on trucks that originally had the factory vacuum gauge option?
Also, what was the original code on the glove box door on the trucks so equipped? Thanks, Robert
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My vehicles: '90 Silverado Sport '71 Chevelle SS Convertible '70 C-10 - My Grandfather bought it new - original un-restored Last edited by Roberty; 06-06-2005 at 08:15 PM. |
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#2 |
Registered User
Join Date: Feb 2004
Location: Tacoma WA
Posts: 1,365
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No hose
The factory set ups I have seen used steel tubing to the vac. spud on the intake manifold on the passenger side behind the carb. Yes there is a little hose to mate but I think if it was all hose it would deteriorate(sp) under the hood. Same size tubing as the vac. advance and trans. modulator. Same size rubber hose for unions.
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67 C-20 LWB, tilt, speed alert, vac, 454, T400 67 C-10 SWB, factory air with more to follow |
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#3 |
Hot Damn - Here I Am!!
Join Date: Feb 2000
Location: Ringgold, Georgia
Posts: 726
|
Thanks for the info Bob. That's what I figured. Now I've got to just find an original hose/tube setup for sale. I haven't seen this repo'ed yet.
Anyone have an original one for sale?
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My vehicles: '90 Silverado Sport '71 Chevelle SS Convertible '70 C-10 - My Grandfather bought it new - original un-restored |
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#4 | |
< 69 Blazer
Join Date: Mar 2004
Location: Nevada, TX
Posts: 293
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Quote:
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#5 |
Registered User
Join Date: Oct 2004
Location: saskatoon, planet earth
Posts: 691
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OK, here's a stupid question.. Why does a person need a vacume guage anyways?
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I got a bench seat baby, you don't have to sit over there. |
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#6 |
Registered User
Join Date: Jun 2004
Location: Beeville, Texas
Posts: 1,943
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They let you know if you have a valve-train problem. Like if your camshaft lobes are worn, you won't have much vacuum. Stock engines should have 17 to 25 inches of vacuum I think.
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RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck |
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#7 | |
Hot Damn - Here I Am!!
Join Date: Feb 2000
Location: Ringgold, Georgia
Posts: 726
|
Quote:
My old Chevelle SS convertable has a vacuum gauge of sorts - it's called a Cowl Induction Hood. ![]() ![]()
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My vehicles: '90 Silverado Sport '71 Chevelle SS Convertible '70 C-10 - My Grandfather bought it new - original un-restored Last edited by Roberty; 06-07-2005 at 11:27 PM. |
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