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Offenhauser Dual Port intake manifolds feature completely separate runner systems for the primaries and secondaries. At low-load, the primaries feed the fuel-air charge through the smaller bottom passages at near sonic speed, improving power and efficiency. When the secondaries open, their charge goes through the bigger, cooler upper passages. Then, in turn, it is rammed into the cylinders when it encounters the high-velocity mix from the primaries. The results are better fuel economy and a 15-30 percent power increase across the whole rpm range.
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Intake Manifold, Dual Port, Aluminum, Natural, Square Bore, Ford, 289, 302, Each
Not Yet Reviewed
Part Number: OFY-6009DP
Estimated Ship Date: 6/17/2014 (if ordered today)
This part is normally shipped directly from the manufacturer / Supplier.
Order this item and get free delivery and handling on your entire order! Offer excludes truck freight fees. Valid on orders shipped in the contiguous United States.
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