Vacuum line diagram needed?

Tiny
RITZO
  • MEMBER
  • 1972 CHEVROLET NOVA
  • 0.5L
  • V8
  • 2WD
  • MANUAL
  • 22,000 MILES
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.
Friday, September 8th, 2023 AT 10:34 AM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 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.
Was this
answer
helpful?
Yes
No
Friday, September 8th, 2023 AT 7:35 PM
Tiny
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.
Was this
answer
helpful?
Yes
No
Saturday, September 9th, 2023 AT 3:43 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 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.
Was this
answer
helpful?
Yes
No
Saturday, September 9th, 2023 AT 8:24 PM
Tiny
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.
Was this
answer
helpful?
Yes
No
Sunday, September 10th, 2023 AT 6:20 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 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
Was this
answer
helpful?
Yes
No
Sunday, September 10th, 2023 AT 7:16 PM

Please login or register to post a reply.

Sponsored links