Single Plane Carbureted Intake GM LS3/L92 Black Ceramic Coated Carbureted Single Plane Intake Manifold Fits All GM LS Gen III or IV Engines Equipped with LS3/L92 Style Rectangular Port Cylinder Heads HolleyCarbureted Single plane intake manifold. Fits all Gm Ls Gen Iii or Iv engines equipped with LS3 L92 style rectangular port cylinder heads Features and Benefits: Weight 11. 5 lbs Minimum carb flange height fit in vehicles with minimum hood modifications Height (front) 5. 417 inch to the lifter valley cover flange at the engine block front flange 2500 7000 RPM power band Optimized runner layout and constant cross sectional area broad torque curve, best