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292 2-Barrel Intake Questions

 
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Old 02-08-2015, 12:38 PM
NateTheGreat
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292 2-Barrel Intake Questions

A couple quick (newbie) questions about the 292 2-barrel intake manifold.

My carburetor (Holley 2300) has no Phenolic spacer between the IM and the carburetor. In looking at the factory parts manual I found the original part # (b7az 9a589-c). My question is, is it necessary to put this spacer in or can I run the carb directly on top of the manifold with only a couple fiber gaskets?

Secondly, I'm trying to find a manifold vacuum port for hooking up my power brake booster. I can't seem to find any articles putting to the best vacuum port for the booster on the 2-barrel intake. Can someone help me locate the best manifold vacuum port for the brake booster?
 
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Old 02-08-2015, 01:30 PM
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Large port at back of the carb is used for PCV/Brake booster. Don't "need" a spacer but you want one, to prevent carb perc mainly.
 
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Old 02-08-2015, 11:24 PM
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My carb has no ports on the back of it. Only ported vacuum for vacuum advance on the side of the carb. There is a large port on the back of the manifold and one on the top, directly in front of the carb. Will it make any difference?
 
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Old 02-09-2015, 12:50 AM
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I don't believe so - whatever port is closer to the brake booster should be best afaik. Someone should chime in if they know better. Maybe get a spacer with a vacuum port That would solve both issues.
 
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Old 02-09-2015, 06:49 AM
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Thanks for your help. I'll look into that.
 
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Old 02-09-2015, 09:08 AM
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Use the port on the back of the manifold and you will be fine.
 
 
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