Edelbrock part #2703 Performer EPS intake manifold is designed for 1986 and earlier 262-400 cubic-inch Chevys. Edelbrock's Patented Dual-plane, low-rise design with a 180-degree firing order greatly improves torque over a wide rpm range for excellent thro Product Features:Idle-5500 RPM RangeDual Plane Type-4150 Style Flange3.74 in. Front Height, 4.27 in. Center Height, 4.8 in. Rear HeightSatin FinishNon-EGR W/ Oil Fill Tube