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Vacuum hose [message #323008] Wed, 30 August 2017 17:15 Go to next message
George is currently offline  George   Canada
Messages: 14
Registered: January 2004
Location: Flagstaff, AZ
Karma: 0
Junior Member
Please tell how much of each size vacuum hose I need to replace all vacuum lines in my stock '73 GMC.
I couldn't find this info in the archive.

Thanks, George in Flagstaff


George Castleberry
73 Painted Desert
Flagstaff, AZ

[Updated on: Wed, 30 August 2017 17:16]

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Re: [GMCnet] Vacuum hose [message #323012 is a reply to message #323008] Wed, 30 August 2017 18:09 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
George,

I seriously doubt anyone will be able to provide that information. I would suggest you remove the air cleaner and take photo of the
vacuum hoses on your GMC. This will provide a routing "schematic." Next label each one of them at the ends and take another photo.
When you're sure you've got everything labeled and photographed in such a way to allow you to reconnect them all correctly remove
them and measure the ID, the OD and length of each and you should be able to tell how much you need of each.

Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808


-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of George
Sent: Thursday, August 31, 2017 8:15 AM
To: gmclist@list.gmcnet.org
Subject: [GMCnet] Vacuum hose

Please tell how much of each size vacuum hose I need to replace all vacuum lines in my stock '73 GMC.

Thanks, George in Flagstaff


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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
Re: [GMCnet] Vacuum hose [message #323059 is a reply to message #323012] Thu, 31 August 2017 17:37 Go to previous messageGo to next message
tphipps is currently offline  tphipps   United States
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
Senior Member
After doing the very interesting vacuum line measurements, please list your findings on the forum. Saves the information forever.
Also, annotate the engine size. I'm going to jump to the idea that there is a difference on routing between 455 & 403.
Rob's photo idea is one that I use on every task I do on the GMC. Senior moments kill my memory.
Tom, MS II


2012 Phoenix Cruiser model 2552 KA4CSG
Re: [GMCnet] Vacuum hose [message #323062 is a reply to message #323059] Thu, 31 August 2017 18:42 Go to previous message
George is currently offline  George   Canada
Messages: 14
Registered: January 2004
Location: Flagstaff, AZ
Karma: 0
Junior Member
Will do...it's a 455

George Castleberry
73 Painted Desert
Flagstaff, AZ

[Updated on: Thu, 31 August 2017 18:42]

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