Chev 348 409 W Engine Edelbrock Performer RPM Intake Manifold # ED7158Chev 348 409 W Engine Edelbrock Performer RPM Intake Manifold # ED7158 Intake Manifold, Performer RPM, Dual Plane, Aluminum, Natural, Square Bore, Chevy, Big Block W Engine, Each Intake Section Included: Complete Engine Block Deck Height: Standard deck Carburetor Quantity: One Intake Style: Dual plane Basic Operating RPM Range: 1,500 6,500 Intake Manifold Height: 4. 620 in. Intake Color: Natural Intake Material: Aluminum EGR: No Quantity: Sold