Vacuum line diagram needed?

1972 CHEVROLET NOVA
22,000 MILES • 0.5L • V8 • 2WD • MANUAL
Avatar
RITZO
  • MEMBER
  • 3 POSTS
Need a vacuum line diagram specific to the 350 quadrajet 4 barrel. The car listed above is an SS. It has all factory material 22,000 miles. Also has an electrical solenoid with a vacuum hose.
Sep 8, 2023 at 10:34 AM
Advertisement
Avatar
JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Hi,

Because of the model year, I basically have little to nothing. I attached what I was able to find for the air injection and the deceleration valve. I know there has to be one for the vacuum advance. Usually, that is a ported vacuum and comes from the carb.

Take a look at what I attached. Let me know if you have any specific questions, I'll try my best to help.

Take care,

Joe

See pics below.
Images (Click to enlarge)
Attached Media
Attached Media
Sep 8, 2023 at 7:35 PM
Avatar
RITZO
  • MEMBER
  • 3 POSTS
I believe what you are showing is from a 73 that we used to call a smog pump. I do not have that.
Images (Click to enlarge)
Attached Media
Attached Media
Attached Media
Attached Media
Attached Media
Sep 9, 2023 at 3:43 AM
Advertisement
Avatar
JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Hi,

Wow, that looks great!!! Most hoses looked connected. Are there certain ones you are having an issue with?

Also, the pics I sent indicated 1972, so I'm not sure. See pic 1 below.

I was able to find two more schematics in a different manual. One is for the vacuum advance and the other is for the EGR. (see pics 2 and 3)

Let me know if they help at all.

Take care,

joe

See pics below.
Images (Click to enlarge)
Attached Media
Attached Media
Attached Media
Sep 9, 2023 at 8:24 PM
Avatar
RITZO
  • MEMBER
  • 3 POSTS
I went to jegs yesterday a purchased 3 manuals for the Nova. Some help but not a 100% so I will figure it out or attend some car shows that have the same setup.
Sep 10, 2023 at 6:20 AM
Avatar
JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Hi,

Sorry I couldn't get more for you. I hope you are able to find what is needed. The car show idea is actually a good one.

If there is anything other, I can help with, let me know.

Take care,

Joe
Sep 10, 2023 at 7:16 PM