Thread: Dual Quads (Holley) on a Small Block Questions
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Old 04-15-2010, 08:02 PM
ERA Chas ERA Chas is offline
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You are right. You don't have enough displacement, cam, head or exhaust for 900cfm mechanically delivered.

I have 1308cfm feeding 427 inches with big cam, 320cfm heads, 2.250 intakes but vac secondaries meter that demand perfectly. Only on WOT does all 1300 come in.

Stay with vacuum.
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