Power Brake Booster Hose - Pontiac GTO Forum
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post #1 of 5 (permalink) Old 05-19-2017, 04:59 PM Thread Starter
 
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Power Brake Booster Hose

I'm putting an SMI Q-jet that I ordered on my'68 GTO to replace the dysfunctional Edelbrock that it came with. In the process I will need to replace the vacuum hose going from the carb to the power brake (PB) booster. I went to the local chain auto parts store and asked for PB vacuum hose, they handed me 5/16" gas hose?!?

What are you all using for PB booster vacuum hose and in what ID?

Thanks!!
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post #2 of 5 (permalink) Old 05-19-2017, 06:55 PM
 
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good gas hose will work fine. your nipple is either 3/8 or 5/16, but 5/16 works tight on 3/8 nipple so that is all right.
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post #3 of 5 (permalink) Old 05-20-2017, 04:38 AM
 
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The early oe hose from the factory and or optional PBB kit was 11/32 light duty vac hose.
This is from a '66 and may apply to your '69...
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GTO Jr. - A.K.A. SPRINT 6
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post #4 of 5 (permalink) Old 05-22-2017, 12:23 PM
 
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Yup I'm using the same set up with my SMI. I've read that it's pretty typical.

69 Lemans
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post #5 of 5 (permalink) Old 05-23-2017, 10:35 AM Thread Starter
 
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Thanks, all!! I appreciate the advice, now to hunt down some hose.
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO General Discussion

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