302 V8 vacuum diagram. - Ford Mustang Forum

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post #1 of 2 (permalink) Old 01-24-2010 Thread Starter
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Joined: May 2008
Location: Laverne
Posts: 152
302 V8 vacuum diagram.

I bought a used holley 600, 1850 carb and a new performer manifold for my 1968 mustang it has a 302 V8 and manual trans. where do the vacuum hoses hook up? There is a bigger place for a hose one on the side at the back close to the bottom of carb and two smaller ones at the front on the side of carb. one is close to the bottom and the other is mid way up on the carb all three are on the same side. thanks.

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post #2 of 2 (permalink) Old 01-24-2010
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302 V8 vacuum diagram.

Hello wolfdog,
First good luck with the project.

As for vacuum - pretty simple.

The large port (tube) should run a line to the PVC valve
probably located in the pass valve cover.

The little port on the pass side of the carb (near mixture screw) should
run to the distributor vacuum advance unit. The section of the carb where
the mixture screws are is called the metering block.

You will have a port under the fuel bowl. (The front of the carb)
That port should be capped.

That's it. - -

The only time you use other vac sources is a smog motors.

Just so you know - - the power brake booster (if equipped) gets it's vac
from a line at the rear of the intake.

You should be goof to go.

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