Speedmaster Dual Plane Intake Manifold The Speedmaster mid rise air design features the identical plenum and runner design as the normal mid rise. The main difference is that there is an open area under the plenum chamber. This feature is sometimes called an air gap design. The air flowing under the plenum provides a cooler charge for the incoming air with less heat transfer from the engine. This cooler air charge provides additional power and torque.
Part Type: Intake Manifold Application: Ford 351W Intake Manifold Style: Dual Plane Engine Block Style: OE Carburetor Quantity: 1 Carburetor Mounting Style: 4bbl. Square Bore RPM Range: 1500-6500 EGR Compatible: No Carburetor Pad Height: 5.120" Intake Manifold Material: Aluminum Intake Manifold Finish: Natural Manufacturer: Speedmaster Manufacturer's Part Number: 1-147-046 Weight: 18.2 lbs. Warranty: Quantity: Sold as Each
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