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What is the stock cfm for GM 350 Ci 5.7 liter intake manifold?
Wiki User
∙ 13y ago
It's not so much about the amount of air you can stuff in there, it's more about the quality of the mixture of air and gas. You want the gas to remain suspended in the air all the way to the intake port.
The problem is that a manifold that flows well at high speeds will usually be very inefficient at low speeds. The ones that come from the factory are intended for lower rpm use. Figure from idle to 5000-5500.
The biggest carb I've seen from the factory is an 855 cfm Holley. So that's probably about the limit for that type of manifold.
Wiki User
∙ 13y ago
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