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Whats the correct Manifold Fitting?

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Old Nov 26, 2012 | 01:06 PM
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Default Whats the correct Manifold Fitting?

Whats the correct Manifold Vacuum Fitting?
For my 1969 350/350 coupe...
I have PS, PB, 4speed, NO AC, NO PW, NO PWL

My Vacuum system has been disconnected by the PO, so Im starting at the beginning to fix. The manifold fitting there now is one bigger outlet (attached to the PB) and a smaller diameter one which is plugged off.

Thanks guys
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Old Nov 26, 2012 | 02:15 PM
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Two port. One for power brake booster and one for main vacuum system supply.

The AIM shows them.

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Old Nov 27, 2012 | 05:29 PM
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I guess I was asking if the 2 outlets were one smaller and one bigger.
Seems on mine it doesn't make sense as the larger outlet goes to the brake booster and the smaller outlet doesnt match the hose size required to attach the first component; the inline air filter. The inline air filter takes a larger hose but my outlet is small...
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Old Nov 27, 2012 | 05:48 PM
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I just went out to the garage and looked at my 69 - optioned exactly like yours!!! Two ports, one large and one small.

If you need any pictures - let me know.

John
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Old Nov 27, 2012 | 06:05 PM
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Originally Posted by Go Vette Go
I just went out to the garage and looked at my 69 - optioned exactly like yours!!! Two ports, one large and one small.

If you need any pictures - let me know.

John
The large one goes to the brake booster? Thanks for looking for me.
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Old Nov 27, 2012 | 06:07 PM
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Originally Posted by 72and86
The large one goes to the brake booster? Thanks for looking for me.
Correct - large one goes to the booster.
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