For Small Block Ford 351W Aluminum Carb Intake Manifold 1500-6500 Satin E42458Description: 100% Brand New Items, Never Used Or Installed Our Low Rise manifold for 351w engines is the ultimate street performance manifold for this engine. It provides good top end power without sacrificing bottom end torque. Its long runner dual plane design provides the best of both worlds. Best with an aggressive street cam. For street, use a 600 750 cfm vacuum secondary or double pumper carb. For competition, use a 750 850 cfm double pumper.