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If you mean specifically, what type of vacuum, the answer is manifold vacuum. Manifold vacuum is constant and doesn't, change with throttle valve opening, the way ported vacuum does.
The brake booster runs to the large port in the rear of the carb or you can tap into one of the intake runners. You may have to T off some vacuum lines as the 600 carb probably won't have enough to run everything. There are fittings that will screw into the large rear port of the carb that have 2, 3, or 4 smaller Ts for running all this. Manifold vacuum will be any port on the carb base plate and intake manifold. You'll need manifold vacuum to the plastic reserve vacuum ball....that's for the HVAC controls. The intake should have a couple of places to install switches into the coolant flow. You will need the ported EGR vacuum switch for your 84 truck. The switch should have two places to hook vacuum up....one you will hook up to manifold vacuum and the other runs to the EGR. There should also be a ported switch to operate the canister purge valve. If your distributor runs a vacuum advance, run that to a ported vacuum port.....anywhere above the base plate of the carb. That should get you started.....as I'm just going by memory.
Straight-most use the same manifold fitting as the brake booster & not the carb.
Depends on the vehicle and how it is set up. Some are connected before the throttle plate (ported vacuum or delayed vacuum) and some are connected after the throttle plate (straight manifold vacuum). More info needed.
There is no vacuum canister on this vehicle.
Ported vacuum - part time.
"The benefits of purchasing a Miele canister vacuum versus a Miele upright is that the canister vacuum, for one, is quieter than an upright. Also, the canister vacuum comes with attachments that allow you to get into tighter place than the upright. If you have stairs, it's easier to maneuver the canister vacuum, and it's also smaller than the upright. It's also easier to clean car interiors with a canister versus and upright. And the tools and attachments that come with a canister are stored inside the canister. However, with an upright vacuum you don't have to constantly move it around. Uprights also have more suction power than a canister vacuum."
On the sbf windsor manifolds, there is a threaded hole behind(toward rear of manifold) where the carb goes. You will need to screw in a vacuum tree there. As a basic rule of thumb, vacuum lines will always attach to one of the manifold runners that lead to the intake valve(s). Also...pretty much all carbs have vacuum ports. The ones in the base plate are full vacuum, while the ones in the body are usually ported or timed vacuum( like for dist advance). Bri On the sbf windsor manifolds, there is a threaded hole behind(toward rear of manifold) where the carb goes. You will need to screw in a vacuum tree there. As a basic rule of thumb, vacuum lines will always attach to one of the manifold runners that lead to the intake valve(s). Also...pretty much all carbs have vacuum ports. The ones in the base plate are full vacuum, while the ones in the body are usually ported or timed vacuum( like for dist advance). Bri
You are going to have to look at the underhood emissions sticker. I'm not positive if there is one or not, but most cars from this time period have an underhood emissions sticker that tells you what the spark plug gap, ignition timing, and idle speed should be. Attached to the sticker should be a drawing of how the vaccum lins are routed. If you cannot find this under the hood, you may have to get a service manual for the car. The factory service manual is always the best, but I believe Haynes manuals also have the vacuum hose routing listed. You can get Haynes manuals at auto parts stores like Auto Zone. I am not sure what vacuum control unit you mean, but I assume you mean the vapor canister, which controls evaporative emissions (i.e. gasoline that has vaporized). There should be one line going to the gas tank, and another line going to the top of the carburetor (the bowl vent line). These two hoses are relatively large. There should be a third, smaller vacuum hose hooked up to PORTED vacuum on the carburetor. Ported vacuum means vacuum that is present only when the throttle is depressed, as opposed to manifold vacuum which is present whenever the engine is running. You will have to figure out which port on the carburetor is for ported vacuum and which is for manifold vacuum. One way to do this is by using a vacuum gauge. It is possible that there is a fourth hose, (small hose) which is for manifold vacuum. It is unclear to me why this would be needed in addition to the other three, but I have seen canisters set up this way sometimes.
When the vehicle is under acceleration it doesn't supply vacuum. The vacuum canister or reservoir holds a vacuum supply to operate vacuum operated accessories until the engine regains vacuum.
You'd need a constant source such as manifold or throttle body vacuum for power brakes, pcv, and disappearing headlights, and a spark-ported source such as one you'd find above the throttle body for the distributor.
An upright vacuum usually cleans carpets better, but a canister vacuum is better with liquids or heavy debris.