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Old 09-16-2014, 09:49 PM   #1
michael bustamante
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holley vacuum set up

Any of you guys got a pic or a description of setting up vacuum for a new holley 650 with electric choke sittin on a holley street dominator intake?

I know pvc goes to the big port in front of the carb and the brake booster plugs to the back of the carb but what about the distributer? ( HEI ) and what goes ti the vacuum port on the imtake in front of the dist?
I used to know all this but the truck's been on a rebuild for a couple years now and sometimers is starting to affect my noggin
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Old 09-16-2014, 10:14 PM   #2
michael bustamante
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Re: holley vacuum set up

Heres a pic. Boes anything hook up to the side port on the fuel bowl? What about the small port next to the pcv hose inlet?
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Old 09-16-2014, 10:18 PM   #3
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Re: holley vacuum set up

Heres the whole shebang
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Old 09-16-2014, 11:20 PM   #4
geezer#99
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Re: holley vacuum set up

The small port on the side of the bowl is ported vacuum.
The port at the bottom is manifold vacuum.
Either can be used for your dizzy vac pot. Depends what your motor likes.
Vac port in front of dizzy could be used for your booster or for the modulator hook up from your tranny.
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Old 09-17-2014, 07:00 AM   #5
hamjet
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Re: holley vacuum set up

Mine likes the dizzy on the ported vac. (above the idle adjust) with the bottom one plugged..
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Old 09-17-2014, 11:18 AM   #6
michael bustamante
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Re: holley vacuum set up

Cool guys thank you.
I completely forgot about vacuum for the tranny. But im running a 700r4 now.
Ok so what do i hook up to the vacuum T on the manifold now that im not running a turbo 350 anymore? The carb doesnt have a vacuum line going to the intake T right?
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Old 09-17-2014, 01:08 PM   #7
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Re: holley vacuum set up

If you're not using the one on the manifold then remove it and put a plug in or keep it and cap the nipples.
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Old 09-17-2014, 02:02 PM   #8
michael bustamante
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Re: holley vacuum set up

Ok will do. Off to buy a plug!
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