Best Answer

well it depends..usually if you have a 4brl carb the vacuum is built in the carb.

the intake manifold is the main source of vacum. from the carb mounted on the manifold. if you have a 2brl and want to switch to a 4brl, you have to get a new manafold that is made for a 4brl might be worth your while to do elimates all the hoses and clutter junk from a 2brl.

if you have a 2brl, it can be a little complicated. the vac on a 2brl is threw the air cleaner unit. theres vacum hoses that conect to the rear of the carb. the EGR valve a round like cilinder on left side of intake manifold. the choke mounted on the side of carb, and the thermostat housing.

...good luck

User Avatar

Wiki User

โˆ™ 2015-07-14 15:05:13
This answer is:
User Avatar
Study guides

Add your answer:

Earn +20 pts
Q: How does the vacuum system run on a 1991 Chevy with a 350 engine?
Write your answer...
Still have questions?
magnify glass
Related questions

How important are vacuum hoses 1991 Chevy beretta?

The vacuum hoses are very important in a 1991 Beretta. Without the vacuum lines, the engine will not run properly, and the power brakes will not function.

Where is vacuum sensor located on a 1991 Chevy Metro 454 engine?

that must be some metro to have a big block

A lay out of all the vacuum lines for a 1991C20 Chevy a?

I need a lay out of all the vacuum lines for a 1991 Chevy van.

Where is the vacuum modulator on 1991 Chevy siverado?

That year transmission did not use 1

What type of transmission does a 1991 Chevy Van have?

A 1991 Chevy Van has a 4 speed automatic transmission. The engine on the 1991 Chevy Van is a 4.3 L V6 and a 6.2 L Diesel engine is also available as an option.

Do you have a diagram of vacuum hoses on a 1991 Chevy blazer?

I need a diagram for the 1991 Chevy blazer to see where the 3 hoses go to coming off the transfer case.

Where is the 4wd vacuum actuator located on 1991 Chevy s10 pickup?

It is under the battery rack. Remove the battery and there are three bolts in the engine bay and one in the fender well.

Can you install a 4.3l v6 Chevy engine in a 1991 Chevy s-10 blazer?

yes you can

Can you put a 1991 Chevy 350 engine on an older Chevy Turbo 350 transmition?


Where is the factory horsepower for a 1991 Chevy Camaro with a 350 engine?

Not Enough

How do you check where the vacuum problem in a 1991 straight 6 ford f-150?

Start at vacuum source at engine and follow line-by-line

Where is the distributor cap for 1991 Chevy s10 truck?

We need to know which engine it has.

People also asked