![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 |
Nothing to see here.....
![]() Join Date: Jun 2007
Location: Shawnee, KS
Posts: 4,625
|
![]()
I need a pic of where the factory tach harness col wire goes through the firewall. my 67-72 assembly book shows the coil wire entering the engine bay close to where the oil pressure tubing comes through. however on a search, someone posted the location was to the right of the main harness connection under the master cylinder.
and...... I'd also really like a pic of the factory vacuum gauge tubing in the engine bay. this will probably only be able to come from the big boys (C-40 and above). I know where it connects to the manifold, but I'd like to know where it enters the cab and if it is coiled like the oil pressure. Thanks!!!!!
__________________
Doug ![]() ![]() The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson |
![]() |
![]() |
![]() |
#2 |
Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
|
Re: Picture Request: Factory Tach Harness/Vacuum Tubing
Here is a pic of the firewall on a 72 with factory tach hole located to the left of the bulkhead connector. Other years could be different.
Jim
__________________
1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
![]() |
![]() |
![]() |
#3 | |
Not a bad nut after all..
Join Date: Dec 2000
Location: ND
Posts: 1,760
|
Re: Picture Request: Factory Tach Harness/Vacuum Tubing
Quote:
__________________
'05 Chevy 2500HD 4x4 '72 GMC LWB 4x2 driver '72 Chevy LWB 4x4 plow truck '71 Blazer 4x4 driver '70 GMC LWB trailer |
|
![]() |
![]() |
![]() |
#4 |
Nothing to see here.....
![]() Join Date: Jun 2007
Location: Shawnee, KS
Posts: 4,625
|
Re: Picture Request: Factory Tach Harness/Vacuum Tubing
^^^I'd like to know that as well. was it rubber tubing or hard line like the oil pressure line. my bet it was hard tubing....
thanks for the pic Jim. I read the thread that you had posted that pic before. thanks for the good info! any other tach or vacuum info out there???
__________________
Doug ![]() ![]() The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson |
![]() |
![]() |
![]() |
#5 |
70+ ( Old Skool Club )
![]() Join Date: Nov 2003
Location: Saskatoon, Saskatchewan ,Canada
Posts: 9,162
|
Re: Picture Request: Factory Tach Harness/Vacuum Tubing
ttt
__________________
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 |
![]() |
![]() |
![]() |
#6 |
Senior Member
![]() Join Date: Apr 2000
Location: madison indiana
Posts: 3,839
|
Re: Picture Request: Factory Tach Harness/Vacuum Tubing
doug all vac gauge clusters i have taken out have been hard line, i got a 70 1/2 ton that the owner had the dealership install a vac in the cluster it also has the hard lines..
__________________
jamie72 72 BB cheyenne -- Restoration getting started.. member #807 http://www.myspace.com/whitetailobsession www.antlertalk.com |
![]() |
![]() |
![]() |
#7 |
Nothing to see here.....
![]() Join Date: Jun 2007
Location: Shawnee, KS
Posts: 4,625
|
Re: Picture Request: Factory Tach Harness/Vacuum Tubing
Thanks Jamie!!! I should have pulled an oil pressure line when I was at the salvage yard yesterday. Darn it!
__________________
Doug ![]() ![]() The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson |
![]() |
![]() |
![]() |
#8 |
Senior Member
![]() Join Date: Apr 2000
Location: madison indiana
Posts: 3,839
|
Re: Picture Request: Factory Tach Harness/Vacuum Tubing
the lines for vacs are bigger like brake lines, or they are from what i have seen.. good luck.
__________________
jamie72 72 BB cheyenne -- Restoration getting started.. member #807 http://www.myspace.com/whitetailobsession www.antlertalk.com |
![]() |
![]() |
![]() |
#9 |
Nothing to see here.....
![]() Join Date: Jun 2007
Location: Shawnee, KS
Posts: 4,625
|
Re: Picture Request: Factory Tach Harness/Vacuum Tubing
just an fyi to all.
I drilled the bulkhead in the exact dimple that Jim had pictured above, and it was perfect. the reproduction tach harness (from Classic Parts) fits the location like a glove. the wiring had the correct length and the coil wire was long enough to run up to the bulkhead gutter, over the engine, and back down to the coil. a little non adhesive black tape and it looks completely factory. now on to the vacuum portion of the show......
__________________
Doug ![]() ![]() The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson |
![]() |
![]() |
![]() |
#10 |
Not a bad nut after all..
Join Date: Dec 2000
Location: ND
Posts: 1,760
|
Re: Picture Request: Factory Tach Harness/Vacuum Tubing
Any updates on the vacuum gauge?
__________________
'05 Chevy 2500HD 4x4 '72 GMC LWB 4x2 driver '72 Chevy LWB 4x4 plow truck '71 Blazer 4x4 driver '70 GMC LWB trailer |
![]() |
![]() |
![]() |
#11 |
Nothing to see here.....
![]() Join Date: Jun 2007
Location: Shawnee, KS
Posts: 4,625
|
Re: Picture Request: Factory Tach Harness/Vacuum Tubing
installed in the cluster (and it loos killer!), but dealing with a vacuum advance issue right now. as soon as I get my stumbling engine problem figured out, I plan on getting pictures up.
__________________
Doug ![]() ![]() The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson |
![]() |
![]() |
![]() |
#12 |
Not a bad nut after all..
Join Date: Dec 2000
Location: ND
Posts: 1,760
|
Re: Picture Request: Factory Tach Harness/Vacuum Tubing
I have two ideas for vacuum gauge "plumbing":
Feedback is appreciated.
__________________
'05 Chevy 2500HD 4x4 '72 GMC LWB 4x2 driver '72 Chevy LWB 4x4 plow truck '71 Blazer 4x4 driver '70 GMC LWB trailer |
![]() |
![]() |
![]() |
#13 |
Registered User
Join Date: Oct 2005
Location: Metro Vancouver
Posts: 444
|
Re: Picture Request: Factory Tach Harness/Vacuum Tubing
--------------------------------------------------------------------------------
Any updates on the vacuum gauge?
__________________
1972 Chevy C10 Custom Deluxe Highlander 1972 Chevy C10 Custom Deluxe Medium Green |
![]() |
![]() |
![]() |
#14 |
70+ ( Old Skool Club )
![]() Join Date: Nov 2003
Location: Saskatoon, Saskatchewan ,Canada
Posts: 9,162
|
Re: Picture Request: Factory Tach Harness/Vacuum Tubing
I haven't installed mine yet but have all the parts and will use a steel line from the fitting on the engine to inside the cab then use rubber line to connect to gauge.
__________________
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 |
![]() |
![]() |
![]() |
#15 | |
Registered User
Join Date: Oct 2005
Location: Metro Vancouver
Posts: 444
|
Re: Picture Request: Factory Tach Harness/Vacuum Tubing
Quote:
any pictures would be great.
__________________
1972 Chevy C10 Custom Deluxe Highlander 1972 Chevy C10 Custom Deluxe Medium Green |
|
![]() |
![]() |
![]() |
#16 |
Registered User
Join Date: Aug 2010
Location: central oregon
Posts: 166
|
Re: Picture Request: Factory Tach Harness/Vacuum Tubing
Hi Guys, I dont have a picture but my 70 GMC has the large vacuum gauge in the center of the dash ( between the speedo and gas gauge) and it has a rubber hose that runs through a gray plastic grommet, then to the side of the QJet. hope thes helps. mike
|
![]() |
![]() |
![]() |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|