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Old 03-20-2005, 04:15 PM
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air gap vs rpm performer

can anyone tell me how these intakes compare against each other. which one to use in what application. what will give you better performance?

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Old 03-20-2005, 04:55 PM
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The RPM will give slightly better performance. It will depend on your underhood temps and airflow.

If you already have an RPM the Air Gap may not be worth the $$$. Starting form scratch I would recommend the Air Gap.
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Old 03-20-2005, 06:55 PM
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air gap

In a issue of Hot Rod they tested the air gap vs. a rpm the air gap had slightly better numbers than the rpm on a ford motor. The numbers were so very close that it hardly made a difference.
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Old 03-20-2005, 07:53 PM
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the real difference is on the road, not on the dyno. Those are the numbers and reports I'd like to see-

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Old 03-20-2005, 07:59 PM
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They are both very good manifolds with a similar runner design and basically perform equal, for all practical purposes.
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Old 03-20-2005, 08:59 PM
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Done thread

I have previously done a thread on this subject. The air gap is good in warm climates. It is not recommended for winter use. It causes the carb to freeze up. The design difference is the airgap, the plenum is cut down about a half an inch, and they removed the exhaust gas cross over. The exhaust gas cross over removed and the airgap allows for a cooler intake charge. The plenum being cut down puts it between the perf/rpm and the victor jr. I contacted Edelbrock for dyno test results and they don't have any.
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