Single Plane Split-Design Race Intake Manifold- GM LS3/L92- Black -4150 Carbureted Single Plane Split-Design Race Intake Manifold Fits All GM LS Gen III or IV Engines Equipped with LS3/L92 Style Cylinder Heads Holley? A B Height 7. 25 inch (0 carb flange angle) The new Holley Single Plane Race intake manifold were designed with performance in mind. They feature a race bred, two piece split feature that was previously only found on the most expensive race intakes. The manifold will fit Gm Ls Gen Iii engines with LS3 L92 heads and are intended for 4150 style square bore flanged carburetors or throttle body EFI. ? As Cast Runner Cross Sectional Area 4. 5 in2 at the