Edelbrock part #5409 Performer RPM Dual-Quad intake manifold is designed to fit 1958-1965 Chevrolet 348/409 W big-block engines with factory large port or with our Performer RPM W-series heads #60809 or #60819. The manifold deliver performance with Edel Product Features:1500-6500 RPM RangeDual Plane Quad Type - 4150 Style Flange4.03 in. Front Height, 4.62 in. Center Height, 5.21 in. Rear HeightSatin FinishMade In The USA
