Chev 454 Edelbrock Performer RPM Air-Gap Intake Manifold Plasma # ED7561-CPChev 454 Edelbrock Performer RPM Air Gap Intake Manifold Plasma # ED7561 CP Intake Manifold, Performer RPM Air Gap, Dual Plane, Aluminum, Chrome Plasma Coated, Chevy, Big Block, Oval Port, Std. Deck 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: 5. 220 in. Intake Finish: Chrome plasma coated Intake Material: