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] On Behalf Of George
Sent: Thursday, August 31, 2017 8:15 AM
To: gmclist
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
